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1) Replace ext4's bmap and iopoll implementations to use iomap.

Browse Source 
2)  Clean up extent tree handling.
 
 3)  Other cleanups and miscellaneous bug fixes
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:

 - Replace ext4's bmap and iopoll implementations to use iomap.

 - Clean up extent tree handling.

 - Other cleanups and miscellaneous bug fixes

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (31 commits)
  ext4: save all error info in save_error_info() and drop ext4_set_errno()
  ext4: fix incorrect group count in ext4_fill_super error message
  ext4: fix incorrect inodes per group in error message
  ext4: don't set dioread_nolock by default for blocksize < pagesize
  ext4: disable dioread_nolock whenever delayed allocation is disabled
  ext4: do not commit super on read-only bdev
  ext4: avoid ENOSPC when avoiding to reuse recently deleted inodes
  ext4: unregister sysfs path before destroying jbd2 journal
  ext4: check for non-zero journal inum in ext4_calculate_overhead
  ext4: remove map_from_cluster from ext4_ext_map_blocks
  ext4: clean up ext4_ext_insert_extent() call in ext4_ext_map_blocks()
  ext4: mark block bitmap corrupted when found instead of BUGON
  ext4: use flexible-array member for xattr structs
  ext4: use flexible-array member in struct fname
  Documentation: correct the description of FIEMAP_EXTENT_LAST
  ext4: move ext4_fiemap to use iomap framework
  ext4: make ext4_ind_map_blocks work with fiemap
  ext4: move ext4 bmap to use iomap infrastructure
  ext4: optimize ext4_ext_precache for 0 depth
  ext4: add IOMAP_F_MERGED for non-extent based mapping
  ...
This commit is contained in:
Linus Torvalds 2020-04-05 10:54:03 -07:00
commit 9c94b39560
22 changed files with 392 additions and 675 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/filesystems/fiemap.txt
View File

@ -115,8 +115,10 @@ data. Note that the opposite is not true - it would be valid for
FIEMAP_EXTENT_NOT_ALIGNED to appear alone.
* FIEMAP_EXTENT_LAST
This is the last extent in the file. A mapping attempt past this
extent will return nothing.
This is generally the last extent in the file. A mapping attempt past
this extent may return nothing. Some implementations set this flag to
indicate this extent is the last one in the range queried by the user
(via fiemap->fm_length).
* FIEMAP_EXTENT_UNKNOWN
The location of this extent is currently unknown. This may indicate

7
fs/ext4/balloc.c
View File

@ -516,10 +516,9 @@ int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group,
wait_on_buffer(bh);
ext4_simulate_fail_bh(sb, bh, EXT4_SIM_BBITMAP_EIO);
if (!buffer_uptodate(bh)) {
ext4_set_errno(sb, EIO);
ext4_error(sb, "Cannot read block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, (unsigned long long) bh->b_blocknr);
ext4_error_err(sb, EIO, "Cannot read block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, (unsigned long long) bh->b_blocknr);
ext4_mark_group_bitmap_corrupted(sb, block_group,
EXT4_GROUP_INFO_BBITMAP_CORRUPT);
return -EIO;

18
fs/ext4/block_validity.c
View File

@ -166,10 +166,8 @@ static int ext4_data_block_valid_rcu(struct ext4_sb_info *sbi,
if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
(start_blk + count < start_blk) ||
(start_blk + count > ext4_blocks_count(sbi->s_es))) {
sbi->s_es->s_last_error_block = cpu_to_le64(start_blk);
(start_blk + count > ext4_blocks_count(sbi->s_es)))
return 0;
}
if (system_blks == NULL)
return 1;
@ -181,10 +179,8 @@ static int ext4_data_block_valid_rcu(struct ext4_sb_info *sbi,
n = n->rb_left;
else if (start_blk >= (entry->start_blk + entry->count))
n = n->rb_right;
else {
sbi->s_es->s_last_error_block = cpu_to_le64(start_blk);
else
return 0;
}
}
return 1;
}
@ -220,10 +216,12 @@ static int ext4_protect_reserved_inode(struct super_block *sb,
} else {
if (!ext4_data_block_valid_rcu(sbi, system_blks,
map.m_pblk, n)) {
ext4_error(sb, "blocks %llu-%llu from inode %u "
"overlap system zone", map.m_pblk,
map.m_pblk + map.m_len - 1, ino);
err = -EFSCORRUPTED;
__ext4_error(sb, __func__, __LINE__, -err,
map.m_pblk, "blocks %llu-%llu "
"from inode %u overlap system zone",
map.m_pblk,
map.m_pblk + map.m_len - 1, ino);
break;
}
err = add_system_zone(system_blks, map.m_pblk, n);
@ -365,7 +363,6 @@ int ext4_data_block_valid(struct ext4_sb_info *sbi, ext4_fsblk_t start_blk,
int ext4_check_blockref(const char *function, unsigned int line,
struct inode *inode, __le32 *p, unsigned int max)
{
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
__le32 *bref = p;
unsigned int blk;
@ -379,7 +376,6 @@ int ext4_check_blockref(const char *function, unsigned int line,
if (blk &&
unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
blk, 1))) {
es->s_last_error_block = cpu_to_le64(blk);
ext4_error_inode(inode, function, line, blk,
"invalid block");
return -EFSCORRUPTED;

2
fs/ext4/dir.c
View File

@ -392,7 +392,7 @@ struct fname {
__u32 inode;
__u8 name_len;
__u8 file_type;
char name[0];
char name[];
};
/*

59
fs/ext4/ext4.h
View File

@ -414,7 +414,7 @@ struct flex_groups {
#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
#define EXT4_VERITY_FL 0x00100000 /* Verity protected inode */
#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
/* 0x00400000 was formerly EXT4_EOFBLOCKS_FL */
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
#define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded file */
@ -487,7 +487,7 @@ enum {
EXT4_INODE_EXTENTS = 19, /* Inode uses extents */
EXT4_INODE_VERITY = 20, /* Verity protected inode */
EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
/* 22 was formerly EXT4_INODE_EOFBLOCKS */
EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
@ -533,7 +533,6 @@ static inline void ext4_check_flag_values(void)
CHECK_FLAG_VALUE(EXTENTS);
CHECK_FLAG_VALUE(VERITY);
CHECK_FLAG_VALUE(EA_INODE);
CHECK_FLAG_VALUE(EOFBLOCKS);
CHECK_FLAG_VALUE(INLINE_DATA);
CHECK_FLAG_VALUE(PROJINHERIT);
CHECK_FLAG_VALUE(RESERVED);
@ -2771,21 +2770,20 @@ extern const char *ext4_decode_error(struct super_block *sb, int errno,
extern void ext4_mark_group_bitmap_corrupted(struct super_block *sb,
ext4_group_t block_group,
unsigned int flags);
extern void ext4_set_errno(struct super_block *sb, int err);
extern __printf(4, 5)
void __ext4_error(struct super_block *, const char *, unsigned int,
extern __printf(6, 7)
void __ext4_error(struct super_block *, const char *, unsigned int, int, __u64,
const char *, ...);
extern __printf(5, 6)
void __ext4_error_inode(struct inode *, const char *, unsigned int, ext4_fsblk_t,
const char *, ...);
extern __printf(6, 7)
void __ext4_error_inode(struct inode *, const char *, unsigned int,
ext4_fsblk_t, int, const char *, ...);
extern __printf(5, 6)
void __ext4_error_file(struct file *, const char *, unsigned int, ext4_fsblk_t,
const char *, ...);
extern void __ext4_std_error(struct super_block *, const char *,
unsigned int, int);
extern __printf(4, 5)
void __ext4_abort(struct super_block *, const char *, unsigned int,
extern __printf(5, 6)
void __ext4_abort(struct super_block *, const char *, unsigned int, int,
const char *, ...);
extern __printf(4, 5)
void __ext4_warning(struct super_block *, const char *, unsigned int,
@ -2806,8 +2804,12 @@ void __ext4_grp_locked_error(const char *, unsigned int,
#define EXT4_ERROR_INODE(inode, fmt, a...) \
ext4_error_inode((inode), __func__, __LINE__, 0, (fmt), ## a)
#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...) \
ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a)
#define EXT4_ERROR_INODE_ERR(inode, err, fmt, a...) \
__ext4_error_inode((inode), __func__, __LINE__, 0, (err), (fmt), ## a)
#define ext4_error_inode_block(inode, block, err, fmt, a...) \
__ext4_error_inode((inode), __func__, __LINE__, (block), (err), \
(fmt), ## a)
#define EXT4_ERROR_FILE(file, block, fmt, a...) \
ext4_error_file((file), __func__, __LINE__, (block), (fmt), ## a)
@ -2815,13 +2817,18 @@ void __ext4_grp_locked_error(const char *, unsigned int,
#ifdef CONFIG_PRINTK
#define ext4_error_inode(inode, func, line, block, fmt, ...) \
__ext4_error_inode(inode, func, line, block, fmt, ##__VA_ARGS__)
__ext4_error_inode(inode, func, line, block, 0, fmt, ##__VA_ARGS__)
#define ext4_error_inode_err(inode, func, line, block, err, fmt, ...) \
__ext4_error_inode((inode), (func), (line), (block), \
(err), (fmt), ##__VA_ARGS__)
#define ext4_error_file(file, func, line, block, fmt, ...) \
__ext4_error_file(file, func, line, block, fmt, ##__VA_ARGS__)
#define ext4_error(sb, fmt, ...) \
__ext4_error(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
#define ext4_abort(sb, fmt, ...) \
__ext4_abort(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
__ext4_error((sb), __func__, __LINE__, 0, 0, (fmt), ##__VA_ARGS__)
#define ext4_error_err(sb, err, fmt, ...) \
__ext4_error((sb), __func__, __LINE__, (err), 0, (fmt), ##__VA_ARGS__)
#define ext4_abort(sb, err, fmt, ...) \
__ext4_abort((sb), __func__, __LINE__, (err), (fmt), ##__VA_ARGS__)
#define ext4_warning(sb, fmt, ...) \
__ext4_warning(sb, __func__, __LINE__, fmt, ##__VA_ARGS__)
#define ext4_warning_inode(inode, fmt, ...) \
@ -2839,7 +2846,12 @@ void __ext4_grp_locked_error(const char *, unsigned int,
#define ext4_error_inode(inode, func, line, block, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
__ext4_error_inode(inode, "", 0, block, " "); \
__ext4_error_inode(inode, "", 0, block, 0, " "); \
} while (0)
#define ext4_error_inode_err(inode, func, line, block, err, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
__ext4_error_inode(inode, "", 0, block, err, " "); \
} while (0)
#define ext4_error_file(file, func, line, block, fmt, ...) \
do { \
@ -2849,12 +2861,17 @@ do { \
#define ext4_error(sb, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
__ext4_error(sb, "", 0, " "); \
__ext4_error(sb, "", 0, 0, 0, " "); \
} while (0)
#define ext4_abort(sb, fmt, ...) \
#define ext4_error_err(sb, err, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
__ext4_abort(sb, "", 0, " "); \
__ext4_error(sb, "", 0, err, 0, " "); \
} while (0)
#define ext4_abort(sb, err, fmt, ...) \
do { \
no_printk(fmt, ##__VA_ARGS__); \
__ext4_abort(sb, "", 0, err, " "); \
} while (0)
#define ext4_warning(sb, fmt, ...) \
do { \

14
fs/ext4/ext4_jbd2.c
View File

@ -80,8 +80,7 @@ static int ext4_journal_check_start(struct super_block *sb)
* take the FS itself readonly cleanly.
*/
if (journal && is_journal_aborted(journal)) {
ext4_set_errno(sb, -journal->j_errno);
ext4_abort(sb, "Detected aborted journal");
ext4_abort(sb, -journal->j_errno, "Detected aborted journal");
return -EROFS;
}
return 0;
@ -272,8 +271,7 @@ int __ext4_forget(const char *where, unsigned int line, handle_t *handle,
if (err) {
ext4_journal_abort_handle(where, line, __func__,
bh, handle, err);
ext4_set_errno(inode->i_sb, -err);
__ext4_abort(inode->i_sb, where, line,
__ext4_abort(inode->i_sb, where, line, -err,
"error %d when attempting revoke", err);
}
BUFFER_TRACE(bh, "exit");
@ -332,6 +330,7 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
err);
}
} else {
set_buffer_uptodate(bh);
if (inode)
mark_buffer_dirty_inode(bh, inode);
else
@ -342,11 +341,8 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
struct ext4_super_block *es;
es = EXT4_SB(inode->i_sb)->s_es;
es->s_last_error_block =
cpu_to_le64(bh->b_blocknr);
ext4_set_errno(inode->i_sb, EIO);
ext4_error_inode(inode, where, line,
bh->b_blocknr,
ext4_error_inode_err(inode, where, line,
bh->b_blocknr, EIO,
"IO error syncing itable block");
err = -EIO;
}

3
fs/ext4/ext4_jbd2.h
View File

@ -512,6 +512,9 @@ static inline int ext4_should_dioread_nolock(struct inode *inode)
return 0;
if (ext4_should_journal_data(inode))
return 0;
/* temporary fix to prevent generic/422 test failures */
if (!test_opt(inode->i_sb, DELALLOC))
return 0;
return 1;
}

480
fs/ext4/extents.c
View File

@ -28,6 +28,7 @@
#include <linux/uaccess.h>
#include <linux/fiemap.h>
#include <linux/backing-dev.h>
#include <linux/iomap.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"
#include "xattr.h"
@ -83,13 +84,6 @@ static void ext4_extent_block_csum_set(struct inode *inode,
et->et_checksum = ext4_extent_block_csum(inode, eh);
}
static int ext4_split_extent(handle_t *handle,
struct inode *inode,
struct ext4_ext_path **ppath,
struct ext4_map_blocks *map,
int split_flag,
int flags);
static int ext4_split_extent_at(handle_t *handle,
struct inode *inode,
struct ext4_ext_path **ppath,
@ -97,9 +91,6 @@ static int ext4_split_extent_at(handle_t *handle,
int split_flag,
int flags);
static int ext4_find_delayed_extent(struct inode *inode,
struct extent_status *newes);
static int ext4_ext_trunc_restart_fn(struct inode *inode, int *dropped)
{
/*
@ -358,8 +349,8 @@ static int ext4_valid_extent_idx(struct inode *inode,
}
static int ext4_valid_extent_entries(struct inode *inode,
struct ext4_extent_header *eh,
int depth)
struct ext4_extent_header *eh,
ext4_fsblk_t *pblk, int depth)
{
unsigned short entries;
if (eh->eh_entries == 0)
@ -370,8 +361,6 @@ static int ext4_valid_extent_entries(struct inode *inode,
if (depth == 0) {
/* leaf entries */
struct ext4_extent *ext = EXT_FIRST_EXTENT(eh);
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
ext4_fsblk_t pblock = 0;
ext4_lblk_t lblock = 0;
ext4_lblk_t prev = 0;
int len = 0;
@ -383,8 +372,7 @@ static int ext4_valid_extent_entries(struct inode *inode,
lblock = le32_to_cpu(ext->ee_block);
len = ext4_ext_get_actual_len(ext);
if ((lblock <= prev) && prev) {
pblock = ext4_ext_pblock(ext);
es->s_last_error_block = cpu_to_le64(pblock);
*pblk = ext4_ext_pblock(ext);
return 0;
}
ext++;
@ -431,7 +419,7 @@ static int __ext4_ext_check(const char *function, unsigned int line,
error_msg = "invalid eh_entries";
goto corrupted;
}
if (!ext4_valid_extent_entries(inode, eh, depth)) {
if (!ext4_valid_extent_entries(inode, eh, &pblk, depth)) {
error_msg = "invalid extent entries";
goto corrupted;
}
@ -449,14 +437,14 @@ static int __ext4_ext_check(const char *function, unsigned int line,
return 0;
corrupted:
ext4_set_errno(inode->i_sb, -err);
ext4_error_inode(inode, function, line, 0,
"pblk %llu bad header/extent: %s - magic %x, "
"entries %u, max %u(%u), depth %u(%u)",
(unsigned long long) pblk, error_msg,
le16_to_cpu(eh->eh_magic),
le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max),
max, le16_to_cpu(eh->eh_depth), depth);
ext4_error_inode_err(inode, function, line, 0, -err,
"pblk %llu bad header/extent: %s - magic %x, "
"entries %u, max %u(%u), depth %u(%u)",
(unsigned long long) pblk, error_msg,
le16_to_cpu(eh->eh_magic),
le16_to_cpu(eh->eh_entries),
le16_to_cpu(eh->eh_max),
max, le16_to_cpu(eh->eh_depth), depth);
return err;
}
@ -556,6 +544,12 @@ int ext4_ext_precache(struct inode *inode)
down_read(&ei->i_data_sem);
depth = ext_depth(inode);
/* Don't cache anything if there are no external extent blocks */
if (!depth) {
up_read(&ei->i_data_sem);
return ret;
}
path = kcalloc(depth + 1, sizeof(struct ext4_ext_path),
GFP_NOFS);
if (path == NULL) {
@ -563,9 +557,6 @@ int ext4_ext_precache(struct inode *inode)
return -ENOMEM;
}
/* Don't cache anything if there are no external extent blocks */
if (depth == 0)
goto out;
path[0].p_hdr = ext_inode_hdr(inode);
ret = ext4_ext_check(inode, path[0].p_hdr, depth, 0);
if (ret)
@ -2134,155 +2125,6 @@ cleanup:
return err;
}
static int ext4_fill_fiemap_extents(struct inode *inode,
ext4_lblk_t block, ext4_lblk_t num,
struct fiemap_extent_info *fieinfo)
{
struct ext4_ext_path *path = NULL;
struct ext4_extent *ex;
struct extent_status es;
ext4_lblk_t next, next_del, start = 0, end = 0;
ext4_lblk_t last = block + num;
int exists, depth = 0, err = 0;
unsigned int flags = 0;
unsigned char blksize_bits = inode->i_sb->s_blocksize_bits;
while (block < last && block != EXT_MAX_BLOCKS) {
num = last - block;
/* find extent for this block */
down_read(&EXT4_I(inode)->i_data_sem);
path = ext4_find_extent(inode, block, &path, 0);
if (IS_ERR(path)) {
up_read(&EXT4_I(inode)->i_data_sem);
err = PTR_ERR(path);
path = NULL;
break;
}
depth = ext_depth(inode);
if (unlikely(path[depth].p_hdr == NULL)) {
up_read(&EXT4_I(inode)->i_data_sem);
EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
err = -EFSCORRUPTED;
break;
}
ex = path[depth].p_ext;
next = ext4_ext_next_allocated_block(path);
flags = 0;
exists = 0;
if (!ex) {
/* there is no extent yet, so try to allocate
* all requested space */
start = block;
end = block + num;
} else if (le32_to_cpu(ex->ee_block) > block) {
/* need to allocate space before found extent */
start = block;
end = le32_to_cpu(ex->ee_block);
if (block + num < end)
end = block + num;
} else if (block >= le32_to_cpu(ex->ee_block)
+ ext4_ext_get_actual_len(ex)) {
/* need to allocate space after found extent */
start = block;
end = block + num;
if (end >= next)
end = next;
} else if (block >= le32_to_cpu(ex->ee_block)) {
/*
* some part of requested space is covered
* by found extent
*/
start = block;
end = le32_to_cpu(ex->ee_block)
+ ext4_ext_get_actual_len(ex);
if (block + num < end)
end = block + num;
exists = 1;
} else {
BUG();
}
BUG_ON(end <= start);
if (!exists) {
es.es_lblk = start;
es.es_len = end - start;
es.es_pblk = 0;
} else {
es.es_lblk = le32_to_cpu(ex->ee_block);
es.es_len = ext4_ext_get_actual_len(ex);
es.es_pblk = ext4_ext_pblock(ex);
if (ext4_ext_is_unwritten(ex))
flags |= FIEMAP_EXTENT_UNWRITTEN;
}
/*
* Find delayed extent and update es accordingly. We call
* it even in !exists case to find out whether es is the
* last existing extent or not.
*/
next_del = ext4_find_delayed_extent(inode, &es);
if (!exists && next_del) {
exists = 1;
flags |= (FIEMAP_EXTENT_DELALLOC |
FIEMAP_EXTENT_UNKNOWN);
}
up_read(&EXT4_I(inode)->i_data_sem);
if (unlikely(es.es_len == 0)) {
EXT4_ERROR_INODE(inode, "es.es_len == 0");
err = -EFSCORRUPTED;
break;
}
/*
* This is possible iff next == next_del == EXT_MAX_BLOCKS.
* we need to check next == EXT_MAX_BLOCKS because it is
* possible that an extent is with unwritten and delayed
* status due to when an extent is delayed allocated and
* is allocated by fallocate status tree will track both of
* them in a extent.
*
* So we could return a unwritten and delayed extent, and
* its block is equal to 'next'.
*/
if (next == next_del && next == EXT_MAX_BLOCKS) {
flags |= FIEMAP_EXTENT_LAST;
if (unlikely(next_del != EXT_MAX_BLOCKS ||
next != EXT_MAX_BLOCKS)) {
EXT4_ERROR_INODE(inode,
"next extent == %u, next "
"delalloc extent = %u",
next, next_del);
err = -EFSCORRUPTED;
break;
}
}
if (exists) {
err = fiemap_fill_next_extent(fieinfo,
(__u64)es.es_lblk << blksize_bits,
(__u64)es.es_pblk << blksize_bits,
(__u64)es.es_len << blksize_bits,
flags);
if (err < 0)
break;
if (err == 1) {
err = 0;
break;
}
}
block = es.es_lblk + es.es_len;
}
ext4_ext_drop_refs(path);
kfree(path);
return err;
}
static int ext4_fill_es_cache_info(struct inode *inode,
ext4_lblk_t block, ext4_lblk_t num,
struct fiemap_extent_info *fieinfo)
@ -3874,64 +3716,11 @@ out:
return err;
}
/*
* Handle EOFBLOCKS_FL flag, clearing it if necessary
*/
static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
ext4_lblk_t lblk,
struct ext4_ext_path *path,
unsigned int len)
{
int i, depth;
struct ext4_extent_header *eh;
struct ext4_extent *last_ex;
if (!ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))
return 0;
depth = ext_depth(inode);
eh = path[depth].p_hdr;
/*
* We're going to remove EOFBLOCKS_FL entirely in future so we
* do not care for this case anymore. Simply remove the flag
* if there are no extents.
*/
if (unlikely(!eh->eh_entries))
goto out;
last_ex = EXT_LAST_EXTENT(eh);
/*
* We should clear the EOFBLOCKS_FL flag if we are writing the
* last block in the last extent in the file. We test this by
* first checking to see if the caller to
* ext4_ext_get_blocks() was interested in the last block (or
* a block beyond the last block) in the current extent. If
* this turns out to be false, we can bail out from this
* function immediately.
*/
if (lblk + len < le32_to_cpu(last_ex->ee_block) +
ext4_ext_get_actual_len(last_ex))
return 0;
/*
* If the caller does appear to be planning to write at or
* beyond the end of the current extent, we then test to see
* if the current extent is the last extent in the file, by
* checking to make sure it was reached via the rightmost node
* at each level of the tree.
*/
for (i = depth-1; i >= 0; i--)
if (path[i].p_idx != EXT_LAST_INDEX(path[i].p_hdr))
return 0;
out:
ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
return ext4_mark_inode_dirty(handle, inode);
}
static int
convert_initialized_extent(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map,
struct ext4_ext_path **ppath,
unsigned int allocated)
unsigned int *allocated)
{
struct ext4_ext_path *path = *ppath;
struct ext4_extent *ex;
@ -3991,14 +3780,12 @@ convert_initialized_extent(handle_t *handle, struct inode *inode,
ext4_ext_show_leaf(inode, path);
ext4_update_inode_fsync_trans(handle, inode, 1);
err = check_eofblocks_fl(handle, inode, map->m_lblk, path, map->m_len);
if (err)
return err;
map->m_flags |= EXT4_MAP_UNWRITTEN;
if (allocated > map->m_len)
allocated = map->m_len;
map->m_len = allocated;
return allocated;
if (*allocated > map->m_len)
*allocated = map->m_len;
map->m_len = *allocated;
return 0;
}
static int
@ -4007,7 +3794,9 @@ ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode,
struct ext4_ext_path **ppath, int flags,
unsigned int allocated, ext4_fsblk_t newblock)
{
#ifdef EXT_DEBUG
struct ext4_ext_path *path = *ppath;
#endif
int ret = 0;
int err = 0;
@ -4047,11 +3836,9 @@ ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode,
}
ret = ext4_convert_unwritten_extents_endio(handle, inode, map,
ppath);
if (ret >= 0) {
if (ret >= 0)
ext4_update_inode_fsync_trans(handle, inode, 1);
err = check_eofblocks_fl(handle, inode, map->m_lblk,
path, map->m_len);
} else
else
err = ret;
map->m_flags |= EXT4_MAP_MAPPED;
map->m_pblk = newblock;
@ -4100,12 +3887,6 @@ out:
map_out:
map->m_flags |= EXT4_MAP_MAPPED;
if ((flags & EXT4_GET_BLOCKS_KEEP_SIZE) == 0) {
err = check_eofblocks_fl(handle, inode, map->m_lblk, path,
map->m_len);
if (err < 0)
goto out2;
}
out1:
if (allocated > map->m_len)
allocated = map->m_len;
@ -4244,12 +4025,11 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_extent newex, *ex, *ex2;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
ext4_fsblk_t newblock = 0;
int free_on_err = 0, err = 0, depth, ret;
int err = 0, depth, ret;
unsigned int allocated = 0, offset = 0;
unsigned int allocated_clusters = 0;
struct ext4_allocation_request ar;
ext4_lblk_t cluster_offset;
bool map_from_cluster = false;
ext_debug("blocks %u/%u requested for inode %lu\n",
map->m_lblk, map->m_len, inode->i_ino);
@ -4308,12 +4088,12 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
*/
if ((!ext4_ext_is_unwritten(ex)) &&
(flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN)) {
allocated = convert_initialized_extent(
handle, inode, map, &path,
allocated);
err = convert_initialized_extent(handle,
inode, map, &path, &allocated);
goto out2;
} else if (!ext4_ext_is_unwritten(ex))
} else if (!ext4_ext_is_unwritten(ex)) {
goto out;
}
ret = ext4_ext_handle_unwritten_extents(
handle, inode, map, &path, flags,
@ -4364,7 +4144,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
get_implied_cluster_alloc(inode->i_sb, map, ex, path)) {
ar.len = allocated = map->m_len;
newblock = map->m_pblk;
map_from_cluster = true;
goto got_allocated_blocks;
}
@ -4385,7 +4164,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
get_implied_cluster_alloc(inode->i_sb, map, ex2, path)) {
ar.len = allocated = map->m_len;
newblock = map->m_pblk;
map_from_cluster = true;
goto got_allocated_blocks;
}
@ -4442,7 +4220,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
goto out2;
ext_debug("allocate new block: goal %llu, found %llu/%u\n",
ar.goal, newblock, allocated);
free_on_err = 1;
allocated_clusters = ar.len;
ar.len = EXT4_C2B(sbi, ar.len) - offset;
if (ar.len > allocated)
@ -4453,28 +4230,28 @@ got_allocated_blocks:
ext4_ext_store_pblock(&newex, newblock + offset);
newex.ee_len = cpu_to_le16(ar.len);
/* Mark unwritten */
if (flags & EXT4_GET_BLOCKS_UNWRIT_EXT){
if (flags & EXT4_GET_BLOCKS_UNWRIT_EXT) {
ext4_ext_mark_unwritten(&newex);
map->m_flags |= EXT4_MAP_UNWRITTEN;
}
err = 0;
if ((flags & EXT4_GET_BLOCKS_KEEP_SIZE) == 0)
err = check_eofblocks_fl(handle, inode, map->m_lblk,
path, ar.len);
if (!err)
err = ext4_ext_insert_extent(handle, inode, &path,
&newex, flags);
err = ext4_ext_insert_extent(handle, inode, &path, &newex, flags);
if (err) {
if (allocated_clusters) {
int fb_flags = 0;
if (err && free_on_err) {
int fb_flags = flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ?
EXT4_FREE_BLOCKS_NO_QUOT_UPDATE : 0;
/* free data blocks we just allocated */
/* not a good idea to call discard here directly,
* but otherwise we'd need to call it every free() */
ext4_discard_preallocations(inode);
ext4_free_blocks(handle, inode, NULL, newblock,
EXT4_C2B(sbi, allocated_clusters), fb_flags);
/*
* free data blocks we just allocated.
* not a good idea to call discard here directly,
* but otherwise we'd need to call it every free().
*/
ext4_discard_preallocations(inode);
if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
fb_flags = EXT4_FREE_BLOCKS_NO_QUOT_UPDATE;
ext4_free_blocks(handle, inode, NULL, newblock,
EXT4_C2B(sbi, allocated_clusters),
fb_flags);
}
goto out2;
}
@ -4491,7 +4268,7 @@ got_allocated_blocks:
* clusters discovered to be delayed allocated. Once allocated, a
* cluster is not included in the reserved count.
*/
if (test_opt(inode->i_sb, DELALLOC) && !map_from_cluster) {
if (test_opt(inode->i_sb, DELALLOC) && allocated_clusters) {
if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) {
/*
* When allocating delayed allocated clusters, simply
@ -4645,10 +4422,6 @@ retry:
epos = new_size;
if (ext4_update_inode_size(inode, epos) & 0x1)
inode->i_mtime = inode->i_ctime;
} else {
if (epos > inode->i_size)
ext4_set_inode_flag(inode,
EXT4_INODE_EOFBLOCKS);
}
ext4_mark_inode_dirty(handle, inode);
ext4_update_inode_fsync_trans(handle, inode, 1);
@ -4802,16 +4575,8 @@ static long ext4_zero_range(struct file *file, loff_t offset,
}
inode->i_mtime = inode->i_ctime = current_time(inode);
if (new_size) {
if (new_size)
ext4_update_inode_size(inode, new_size);
} else {
/*
* Mark that we allocate beyond EOF so the subsequent truncate
* can proceed even if the new size is the same as i_size.
*/
if (offset + len > inode->i_size)
ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
}
ext4_mark_inode_dirty(handle, inode);
/* Zero out partial block at the edges of the range */
@ -5009,64 +4774,13 @@ int ext4_convert_unwritten_io_end_vec(handle_t *handle, ext4_io_end_t *io_end)
return ret < 0 ? ret : err;
}
/*
* If newes is not existing extent (newes->ec_pblk equals zero) find
* delayed extent at start of newes and update newes accordingly and
* return start of the next delayed extent.
*
* If newes is existing extent (newes->ec_pblk is not equal zero)
* return start of next delayed extent or EXT_MAX_BLOCKS if no delayed
* extent found. Leave newes unmodified.
*/
static int ext4_find_delayed_extent(struct inode *inode,
struct extent_status *newes)
{
struct extent_status es;
ext4_lblk_t block, next_del;
if (newes->es_pblk == 0) {
ext4_es_find_extent_range(inode, &ext4_es_is_delayed,
newes->es_lblk,
newes->es_lblk + newes->es_len - 1,
&es);
/*
* No extent in extent-tree contains block @newes->es_pblk,
* then the block may stay in 1)a hole or 2)delayed-extent.
*/
if (es.es_len == 0)
/* A hole found. */
return 0;
if (es.es_lblk > newes->es_lblk) {
/* A hole found. */
newes->es_len = min(es.es_lblk - newes->es_lblk,
newes->es_len);
return 0;
}
newes->es_len = es.es_lblk + es.es_len - newes->es_lblk;
}
block = newes->es_lblk + newes->es_len;
ext4_es_find_extent_range(inode, &ext4_es_is_delayed, block,
EXT_MAX_BLOCKS, &es);
if (es.es_len == 0)
next_del = EXT_MAX_BLOCKS;
else
next_del = es.es_lblk;
return next_del;
}
static int ext4_xattr_fiemap(struct inode *inode,
struct fiemap_extent_info *fieinfo)
static int ext4_iomap_xattr_fiemap(struct inode *inode, struct iomap *iomap)
{
__u64 physical = 0;
__u64 length;
__u32 flags = FIEMAP_EXTENT_LAST;
__u64 length = 0;
int blockbits = inode->i_sb->s_blocksize_bits;
int error = 0;
u16 iomap_type;
/* in-inode? */
if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {
@ -5081,41 +4795,50 @@ static int ext4_xattr_fiemap(struct inode *inode,
EXT4_I(inode)->i_extra_isize;
physical += offset;
length = EXT4_SB(inode->i_sb)->s_inode_size - offset;
flags |= FIEMAP_EXTENT_DATA_INLINE;
brelse(iloc.bh);
} else { /* external block */
iomap_type = IOMAP_INLINE;
} else if (EXT4_I(inode)->i_file_acl) { /* external block */
physical = (__u64)EXT4_I(inode)->i_file_acl << blockbits;
length = inode->i_sb->s_blocksize;
iomap_type = IOMAP_MAPPED;
} else {
/* no in-inode or external block for xattr, so return -ENOENT */
error = -ENOENT;
goto out;
}
if (physical)
error = fiemap_fill_next_extent(fieinfo, 0, physical,
length, flags);
return (error < 0 ? error : 0);
iomap->addr = physical;
iomap->offset = 0;
iomap->length = length;
iomap->type = iomap_type;
iomap->flags = 0;
out:
return error;
}
static int _ext4_fiemap(struct inode *inode,
struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len,
int (*fill)(struct inode *, ext4_lblk_t,
ext4_lblk_t,
struct fiemap_extent_info *))
static int ext4_iomap_xattr_begin(struct inode *inode, loff_t offset,
loff_t length, unsigned flags,
struct iomap *iomap, struct iomap *srcmap)
{
int error;
error = ext4_iomap_xattr_fiemap(inode, iomap);
if (error == 0 && (offset >= iomap->length))
error = -ENOENT;
return error;
}
static const struct iomap_ops ext4_iomap_xattr_ops = {
.iomap_begin = ext4_iomap_xattr_begin,
};
static int _ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len, bool from_es_cache)
{
ext4_lblk_t start_blk;
u32 ext4_fiemap_flags = FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR;
u32 ext4_fiemap_flags = FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR;
int error = 0;
if (ext4_has_inline_data(inode)) {
int has_inline = 1;
error = ext4_inline_data_fiemap(inode, fieinfo, &has_inline,
start, len);
if (has_inline)
return error;
}
if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) {
error = ext4_ext_precache(inode);
if (error)
@ -5123,19 +4846,19 @@ static int _ext4_fiemap(struct inode *inode,
fieinfo->fi_flags &= ~FIEMAP_FLAG_CACHE;
}
/* fallback to generic here if not in extents fmt */
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) &&
fill == ext4_fill_fiemap_extents)
return generic_block_fiemap(inode, fieinfo, start, len,
ext4_get_block);
if (fill == ext4_fill_es_cache_info)
if (from_es_cache)
ext4_fiemap_flags &= FIEMAP_FLAG_XATTR;
if (fiemap_check_flags(fieinfo, ext4_fiemap_flags))
return -EBADR;
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
error = ext4_xattr_fiemap(inode, fieinfo);
fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR;
error = iomap_fiemap(inode, fieinfo, start, len,
&ext4_iomap_xattr_ops);
} else if (!from_es_cache) {
error = iomap_fiemap(inode, fieinfo, start, len,
&ext4_iomap_report_ops);
} else {
ext4_lblk_t len_blks;
__u64 last_blk;
@ -5150,7 +4873,8 @@ static int _ext4_fiemap(struct inode *inode,
* Walk the extent tree gathering extent information
* and pushing extents back to the user.
*/
error = fill(inode, start_blk, len_blks, fieinfo);
error = ext4_fill_es_cache_info(inode, start_blk, len_blks,
fieinfo);
}
return error;
}
@ -5158,8 +4882,7 @@ static int _ext4_fiemap(struct inode *inode,
int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len)
{
return _ext4_fiemap(inode, fieinfo, start, len,
ext4_fill_fiemap_extents);
return _ext4_fiemap(inode, fieinfo, start, len, false);
}
int ext4_get_es_cache(struct inode *inode, struct fiemap_extent_info *fieinfo,
@ -5175,8 +4898,7 @@ int ext4_get_es_cache(struct inode *inode, struct fiemap_extent_info *fieinfo,
return 0;
}
return _ext4_fiemap(inode, fieinfo, start, len,
ext4_fill_es_cache_info);
return _ext4_fiemap(inode, fieinfo, start, len, true);
}

1
fs/ext4/file.c
View File

@ -872,6 +872,7 @@ const struct file_operations ext4_file_operations = {
.llseek = ext4_llseek,
.read_iter = ext4_file_read_iter,
.write_iter = ext4_file_write_iter,
.iopoll = iomap_dio_iopoll,
.unlocked_ioctl = ext4_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext4_compat_ioctl,

36
fs/ext4/ialloc.c
View File

@ -196,10 +196,9 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
ext4_simulate_fail_bh(sb, bh, EXT4_SIM_IBITMAP_EIO);
if (!buffer_uptodate(bh)) {
put_bh(bh);
ext4_set_errno(sb, EIO);
ext4_error(sb, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
ext4_error_err(sb, EIO, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
ext4_mark_group_bitmap_corrupted(sb, block_group,
EXT4_GROUP_INFO_IBITMAP_CORRUPT);
return ERR_PTR(-EIO);
@ -712,21 +711,34 @@ out:
static int find_inode_bit(struct super_block *sb, ext4_group_t group,
struct buffer_head *bitmap, unsigned long *ino)
{
bool check_recently_deleted = EXT4_SB(sb)->s_journal == NULL;
unsigned long recently_deleted_ino = EXT4_INODES_PER_GROUP(sb);
next:
*ino = ext4_find_next_zero_bit((unsigned long *)
bitmap->b_data,
EXT4_INODES_PER_GROUP(sb), *ino);
if (*ino >= EXT4_INODES_PER_GROUP(sb))
return 0;
goto not_found;
if ((EXT4_SB(sb)->s_journal == NULL) &&
recently_deleted(sb, group, *ino)) {
if (check_recently_deleted && recently_deleted(sb, group, *ino)) {
recently_deleted_ino = *ino;
*ino = *ino + 1;
if (*ino < EXT4_INODES_PER_GROUP(sb))
goto next;
return 0;
goto not_found;
}
return 1;
not_found:
if (recently_deleted_ino >= EXT4_INODES_PER_GROUP(sb))
return 0;
/*
* Not reusing recently deleted inodes is mostly a preference. We don't
* want to report ENOSPC or skew allocation patterns because of that.
* So return even recently deleted inode if we could find better in the
* given range.
*/
*ino = recently_deleted_ino;
return 1;
}
@ -1231,9 +1243,9 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
inode = ext4_iget(sb, ino, EXT4_IGET_NORMAL);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
ext4_set_errno(sb, -err);
ext4_error(sb, "couldn't read orphan inode %lu (err %d)",
ino, err);
ext4_error_err(sb, -err,
"couldn't read orphan inode %lu (err %d)",
ino, err);
return inode;
}

2
fs/ext4/indirect.c
View File

@ -1019,7 +1019,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
* (should be rare).
*/
if (!bh) {
EXT4_ERROR_INODE_BLOCK(inode, nr,
ext4_error_inode_block(inode, nr, EIO,
"Read failure");
continue;
}

54
fs/ext4/inline.c
View File

@ -98,10 +98,9 @@ int ext4_get_max_inline_size(struct inode *inode)
error = ext4_get_inode_loc(inode, &iloc);
if (error) {
ext4_set_errno(inode->i_sb, -error);
ext4_error_inode(inode, __func__, __LINE__, 0,
"can't get inode location %lu",
inode->i_ino);
ext4_error_inode_err(inode, __func__, __LINE__, 0, -error,
"can't get inode location %lu",
inode->i_ino);
return 0;
}
@ -1762,9 +1761,9 @@ bool empty_inline_dir(struct inode *dir, int *has_inline_data)
err = ext4_get_inode_loc(dir, &iloc);
if (err) {
ext4_set_errno(dir->i_sb, -err);
EXT4_ERROR_INODE(dir, "error %d getting inode %lu block",
err, dir->i_ino);
EXT4_ERROR_INODE_ERR(dir, -err,
"error %d getting inode %lu block",
err, dir->i_ino);
return true;
}
@ -1857,47 +1856,6 @@ out:
return error;
}
int ext4_inline_data_fiemap(struct inode *inode,
struct fiemap_extent_info *fieinfo,
int *has_inline, __u64 start, __u64 len)
{
__u64 physical = 0;
__u64 inline_len;
__u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
FIEMAP_EXTENT_LAST;
int error = 0;
struct ext4_iloc iloc;
down_read(&EXT4_I(inode)->xattr_sem);
if (!ext4_has_inline_data(inode)) {
*has_inline = 0;
goto out;
}
inline_len = min_t(size_t, ext4_get_inline_size(inode),
i_size_read(inode));
if (start >= inline_len)
goto out;
if (start + len < inline_len)
inline_len = start + len;
inline_len -= start;
error = ext4_get_inode_loc(inode, &iloc);
if (error)
goto out;
physical = (__u64)iloc.bh->b_blocknr << inode->i_sb->s_blocksize_bits;
physical += (char *)ext4_raw_inode(&iloc) - iloc.bh->b_data;
physical += offsetof(struct ext4_inode, i_block);
brelse(iloc.bh);
out:
up_read(&EXT4_I(inode)->xattr_sem);
if (physical)
error = fiemap_fill_next_extent(fieinfo, start, physical,
inline_len, flags);
return (error < 0 ? error : 0);
}
int ext4_inline_data_truncate(struct inode *inode, int *has_inline)
{
handle_t *handle;

57
fs/ext4/inode.c
View File

@ -269,10 +269,9 @@ void ext4_evict_inode(struct inode *inode)
if (inode->i_blocks) {
err = ext4_truncate(inode);
if (err) {
ext4_set_errno(inode->i_sb, -err);
ext4_error(inode->i_sb,
"couldn't truncate inode %lu (err %d)",
inode->i_ino, err);
ext4_error_err(inode->i_sb, -err,
"couldn't truncate inode %lu (err %d)",
inode->i_ino, err);
goto stop_handle;
}
}
@ -2478,10 +2477,9 @@ update_disksize:
up_write(&EXT4_I(inode)->i_data_sem);
err2 = ext4_mark_inode_dirty(handle, inode);
if (err2) {
ext4_set_errno(inode->i_sb, -err2);
ext4_error(inode->i_sb,
"Failed to mark inode %lu dirty",
inode->i_ino);
ext4_error_err(inode->i_sb, -err2,
"Failed to mark inode %lu dirty",
inode->i_ino);
}
if (!err)
err = err2;
@ -3212,7 +3210,7 @@ static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
return 0;
}
return generic_block_bmap(mapping, block, ext4_get_block);
return iomap_bmap(mapping, block, &ext4_iomap_ops);
}
static int ext4_readpage(struct file *file, struct page *page)
@ -3333,6 +3331,10 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap,
iomap->offset = (u64) map->m_lblk << blkbits;
iomap->length = (u64) map->m_len << blkbits;
if ((map->m_flags & EXT4_MAP_MAPPED) &&
!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
iomap->flags |= IOMAP_F_MERGED;
/*
* Flags passed to ext4_map_blocks() for direct I/O writes can result
* in m_flags having both EXT4_MAP_MAPPED and EXT4_MAP_UNWRITTEN bits
@ -3542,12 +3544,28 @@ static int ext4_iomap_begin_report(struct inode *inode, loff_t offset,
map.m_len = min_t(loff_t, (offset + length - 1) >> blkbits,
EXT4_MAX_LOGICAL_BLOCK) - map.m_lblk + 1;
/*
* Fiemap callers may call for offset beyond s_bitmap_maxbytes.
* So handle it here itself instead of querying ext4_map_blocks().
* Since ext4_map_blocks() will warn about it and will return
* -EIO error.
*/
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
if (offset >= sbi->s_bitmap_maxbytes) {
map.m_flags = 0;
goto set_iomap;
}
}
ret = ext4_map_blocks(NULL, inode, &map, 0);
if (ret < 0)
return ret;
if (ret == 0)
delalloc = ext4_iomap_is_delalloc(inode, &map);
set_iomap:
ext4_set_iomap(inode, iomap, &map, offset, length);
if (delalloc && iomap->type == IOMAP_HOLE)
iomap->type = IOMAP_DELALLOC;
@ -4144,8 +4162,6 @@ int ext4_truncate(struct inode *inode)
if (!ext4_can_truncate(inode))
return 0;
ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
@ -4364,8 +4380,7 @@ make_io:
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
simulate_eio:
ext4_set_errno(inode->i_sb, EIO);
EXT4_ERROR_INODE_BLOCK(inode, block,
ext4_error_inode_block(inode, block, EIO,
"unable to read itable block");
brelse(bh);
return -EIO;
@ -4517,7 +4532,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
(ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) {
if (flags & EXT4_IGET_HANDLE)
return ERR_PTR(-ESTALE);
__ext4_error(sb, function, line,
__ext4_error(sb, function, line, EFSCORRUPTED, 0,
"inode #%lu: comm %s: iget: illegal inode #",
ino, current->comm);
return ERR_PTR(-EFSCORRUPTED);
@ -4580,9 +4595,8 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
if (!ext4_inode_csum_verify(inode, raw_inode, ei) ||
ext4_simulate_fail(sb, EXT4_SIM_INODE_CRC)) {
ext4_set_errno(inode->i_sb, EFSBADCRC);
ext4_error_inode(inode, function, line, 0,
"iget: checksum invalid");
ext4_error_inode_err(inode, function, line, 0, EFSBADCRC,
"iget: checksum invalid");
ret = -EFSBADCRC;
goto bad_inode;
}
@ -4812,7 +4826,7 @@ static int ext4_inode_blocks_set(handle_t *handle,
struct ext4_inode_info *ei)
{
struct inode *inode = &(ei->vfs_inode);
u64 i_blocks = inode->i_blocks;
u64 i_blocks = READ_ONCE(inode->i_blocks);
struct super_block *sb = inode->i_sb;
if (i_blocks <= ~0U) {
@ -4982,7 +4996,7 @@ static int ext4_do_update_inode(handle_t *handle,
raw_inode->i_file_acl_high =
cpu_to_le16(ei->i_file_acl >> 32);
raw_inode->i_file_acl_lo = cpu_to_le32(ei->i_file_acl);
if (ei->i_disksize != ext4_isize(inode->i_sb, raw_inode)) {
if (READ_ONCE(ei->i_disksize) != ext4_isize(inode->i_sb, raw_inode)) {
ext4_isize_set(raw_inode, ei->i_disksize);
need_datasync = 1;
}
@ -5131,9 +5145,8 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync)
sync_dirty_buffer(iloc.bh);
if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) {
ext4_set_errno(inode->i_sb, EIO);
EXT4_ERROR_INODE_BLOCK(inode, iloc.bh->b_blocknr,
"IO error syncing inode");
ext4_error_inode_block(inode, iloc.bh->b_blocknr, EIO,
"IO error syncing inode");
err = -EIO;
}
brelse(iloc.bh);

12
fs/ext4/ioctl.c
View File

@ -327,18 +327,6 @@ static int ext4_ioctl_setflags(struct inode *inode,
if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
migrate = 1;
if (flags & EXT4_EOFBLOCKS_FL) {
/* we don't support adding EOFBLOCKS flag */
if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
err = -EOPNOTSUPP;
goto flags_out;
}
} else if (oldflags & EXT4_EOFBLOCKS_FL) {
err = ext4_truncate(inode);
if (err)
goto flags_out;
}
if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) {
if (!ext4_has_feature_casefold(sb)) {
err = -EOPNOTSUPP;

38
fs/ext4/mballoc.c
View File

@ -1901,8 +1901,15 @@ void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac,
BUG_ON(buddy == NULL);
k = mb_find_next_zero_bit(buddy, max, 0);
BUG_ON(k >= max);
if (k >= max) {
ext4_grp_locked_error(ac->ac_sb, e4b->bd_group, 0, 0,
"%d free clusters of order %d. But found 0",
grp->bb_counters[i], i);
ext4_mark_group_bitmap_corrupted(ac->ac_sb,
e4b->bd_group,
EXT4_GROUP_INFO_BBITMAP_CORRUPT);
break;
}
ac->ac_found++;
ac->ac_b_ex.fe_len = 1 << i;
@ -3914,9 +3921,9 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,
bitmap_bh = ext4_read_block_bitmap(sb, group);
if (IS_ERR(bitmap_bh)) {
err = PTR_ERR(bitmap_bh);
ext4_set_errno(sb, -err);
ext4_error(sb, "Error %d reading block bitmap for %u",
err, group);
ext4_error_err(sb, -err,
"Error %d reading block bitmap for %u",
err, group);
return 0;
}
@ -4083,18 +4090,16 @@ repeat:
err = ext4_mb_load_buddy_gfp(sb, group, &e4b,
GFP_NOFS|__GFP_NOFAIL);
if (err) {
ext4_set_errno(sb, -err);
ext4_error(sb, "Error %d loading buddy information for %u",
err, group);
ext4_error_err(sb, -err, "Error %d loading buddy information for %u",
err, group);
continue;
}
bitmap_bh = ext4_read_block_bitmap(sb, group);
if (IS_ERR(bitmap_bh)) {
err = PTR_ERR(bitmap_bh);
ext4_set_errno(sb, -err);
ext4_error(sb, "Error %d reading block bitmap for %u",
err, group);
ext4_error_err(sb, -err, "Error %d reading block bitmap for %u",
err, group);
ext4_mb_unload_buddy(&e4b);
continue;
}
@ -4302,7 +4307,8 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
spin_lock(&lg->lg_prealloc_lock);
list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order],
pa_inode_list) {
pa_inode_list,
lockdep_is_held(&lg->lg_prealloc_lock)) {
spin_lock(&pa->pa_lock);
if (atomic_read(&pa->pa_count)) {
/*
@ -4347,9 +4353,8 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
err = ext4_mb_load_buddy_gfp(sb, group, &e4b,
GFP_NOFS|__GFP_NOFAIL);
if (err) {
ext4_set_errno(sb, -err);
ext4_error(sb, "Error %d loading buddy information for %u",
err, group);
ext4_error_err(sb, -err, "Error %d loading buddy information for %u",
err, group);
continue;
}
ext4_lock_group(sb, group);
@ -4386,7 +4391,8 @@ static void ext4_mb_add_n_trim(struct ext4_allocation_context *ac)
/* Add the prealloc space to lg */
spin_lock(&lg->lg_prealloc_lock);
list_for_each_entry_rcu(tmp_pa, &lg->lg_prealloc_list[order],
pa_inode_list) {
pa_inode_list,
lockdep_is_held(&lg->lg_prealloc_lock)) {
spin_lock(&tmp_pa->pa_lock);
if (tmp_pa->pa_deleted) {
spin_unlock(&tmp_pa->pa_lock);

13
fs/ext4/mmp.c
View File

@ -175,8 +175,8 @@ static int kmmpd(void *data)
*/
if (retval) {
if ((failed_writes % 60) == 0) {
ext4_set_errno(sb, -retval);
ext4_error(sb, "Error writing to MMP block");
ext4_error_err(sb, -retval,
"Error writing to MMP block");
}
failed_writes++;
}
@ -208,9 +208,9 @@ static int kmmpd(void *data)
retval = read_mmp_block(sb, &bh_check, mmp_block);
if (retval) {
ext4_set_errno(sb, -retval);
ext4_error(sb, "error reading MMP data: %d",
retval);
ext4_error_err(sb, -retval,
"error reading MMP data: %d",
retval);
goto exit_thread;
}
@ -222,8 +222,7 @@ static int kmmpd(void *data)
"Error while updating MMP info. "
"The filesystem seems to have been"
" multiply mounted.");
ext4_set_errno(sb, EBUSY);
ext4_error(sb, "abort");
ext4_error_err(sb, EBUSY, "abort");
put_bh(bh_check);
retval = -EBUSY;
goto exit_thread;

4
fs/ext4/move_extent.c
View File

@ -422,8 +422,8 @@ repair_branches:
block_len_in_page, 0, &err2);
ext4_double_up_write_data_sem(orig_inode, donor_inode);
if (replaced_count != block_len_in_page) {
EXT4_ERROR_INODE_BLOCK(orig_inode, (sector_t)(orig_blk_offset),
"Unable to copy data block,"
ext4_error_inode_block(orig_inode, (sector_t)(orig_blk_offset),
EIO, "Unable to copy data block,"
" data will be lost.");
*err = -EIO;
}

28
fs/ext4/namei.c
View File

@ -160,9 +160,9 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
!ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
ext4_set_errno(inode->i_sb, EFSBADCRC);
ext4_error_inode(inode, func, line, block,
"Directory index failed checksum");
ext4_error_inode_err(inode, func, line, block,
EFSBADCRC,
"Directory index failed checksum");
brelse(bh);
return ERR_PTR(-EFSBADCRC);
}
@ -172,9 +172,9 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
!ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
ext4_set_errno(inode->i_sb, EFSBADCRC);
ext4_error_inode(inode, func, line, block,
"Directory block failed checksum");
ext4_error_inode_err(inode, func, line, block,
EFSBADCRC,
"Directory block failed checksum");
brelse(bh);
return ERR_PTR(-EFSBADCRC);
}
@ -233,13 +233,13 @@ struct dx_root
u8 unused_flags;
}
info;
struct dx_entry entries[0];
struct dx_entry entries[];
};
struct dx_node
{
struct fake_dirent fake;
struct dx_entry entries[0];
struct dx_entry entries[];
};
@ -1532,9 +1532,9 @@ restart:
goto next;
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ext4_set_errno(sb, EIO);
EXT4_ERROR_INODE(dir, "reading directory lblock %lu",
(unsigned long) block);
EXT4_ERROR_INODE_ERR(dir, EIO,
"reading directory lblock %lu",
(unsigned long) block);
brelse(bh);
ret = ERR_PTR(-EIO);
goto cleanup_and_exit;
@ -1543,9 +1543,9 @@ restart:
!is_dx_internal_node(dir, block,
(struct ext4_dir_entry *)bh->b_data) &&
!ext4_dirblock_csum_verify(dir, bh)) {
ext4_set_errno(sb, EFSBADCRC);
EXT4_ERROR_INODE(dir, "checksumming directory "
"block %lu", (unsigned long)block);
EXT4_ERROR_INODE_ERR(dir, EFSBADCRC,
"checksumming directory "
"block %lu", (unsigned long)block);
brelse(bh);
ret = ERR_PTR(-EFSBADCRC);
goto cleanup_and_exit;

212
fs/ext4/super.c
View File

@ -335,10 +335,12 @@ static time64_t __ext4_get_tstamp(__le32 *lo, __u8 *hi)
#define ext4_get_tstamp(es, tstamp) \
__ext4_get_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi)
static void __save_error_info(struct super_block *sb, const char *func,
unsigned int line)
static void __save_error_info(struct super_block *sb, int error,
__u32 ino, __u64 block,
const char *func, unsigned int line)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
int err;
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
if (bdev_read_only(sb->s_bdev))
@ -347,8 +349,62 @@ static void __save_error_info(struct super_block *sb, const char *func,
ext4_update_tstamp(es, s_last_error_time);
strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
es->s_last_error_line = cpu_to_le32(line);
if (es->s_last_error_errcode == 0)
es->s_last_error_errcode = EXT4_ERR_EFSCORRUPTED;
es->s_last_error_ino = cpu_to_le32(ino);
es->s_last_error_block = cpu_to_le64(block);
switch (error) {
case EIO:
err = EXT4_ERR_EIO;
break;
case ENOMEM:
err = EXT4_ERR_ENOMEM;
break;
case EFSBADCRC:
err = EXT4_ERR_EFSBADCRC;
break;
case 0:
case EFSCORRUPTED:
err = EXT4_ERR_EFSCORRUPTED;
break;
case ENOSPC:
err = EXT4_ERR_ENOSPC;
break;
case ENOKEY:
err = EXT4_ERR_ENOKEY;
break;
case EROFS:
err = EXT4_ERR_EROFS;
break;
case EFBIG:
err = EXT4_ERR_EFBIG;
break;
case EEXIST:
err = EXT4_ERR_EEXIST;
break;
case ERANGE:
err = EXT4_ERR_ERANGE;
break;
case EOVERFLOW:
err = EXT4_ERR_EOVERFLOW;
break;
case EBUSY:
err = EXT4_ERR_EBUSY;
break;
case ENOTDIR:
err = EXT4_ERR_ENOTDIR;
break;
case ENOTEMPTY:
err = EXT4_ERR_ENOTEMPTY;
break;
case ESHUTDOWN:
err = EXT4_ERR_ESHUTDOWN;
break;
case EFAULT:
err = EXT4_ERR_EFAULT;
break;
default:
err = EXT4_ERR_UNKNOWN;
}
es->s_last_error_errcode = err;
if (!es->s_first_error_time) {
es->s_first_error_time = es->s_last_error_time;
es->s_first_error_time_hi = es->s_last_error_time_hi;
@ -368,11 +424,13 @@ static void __save_error_info(struct super_block *sb, const char *func,
le32_add_cpu(&es->s_error_count, 1);
}
static void save_error_info(struct super_block *sb, const char *func,
unsigned int line)
static void save_error_info(struct super_block *sb, int error,
__u32 ino, __u64 block,
const char *func, unsigned int line)
{
__save_error_info(sb, func, line);
ext4_commit_super(sb, 1);
__save_error_info(sb, error, ino, block, func, line);
if (!bdev_read_only(sb->s_bdev))
ext4_commit_super(sb, 1);
}
/*
@ -477,7 +535,8 @@ static void ext4_handle_error(struct super_block *sb)
"EXT4-fs error")
void __ext4_error(struct super_block *sb, const char *function,
unsigned int line, const char *fmt, ...)
unsigned int line, int error, __u64 block,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
@ -495,24 +554,21 @@ void __ext4_error(struct super_block *sb, const char *function,
sb->s_id, function, line, current->comm, &vaf);
va_end(args);
}
save_error_info(sb, function, line);
save_error_info(sb, error, 0, block, function, line);
ext4_handle_error(sb);
}
void __ext4_error_inode(struct inode *inode, const char *function,
unsigned int line, ext4_fsblk_t block,
unsigned int line, ext4_fsblk_t block, int error,
const char *fmt, ...)
{
va_list args;
struct va_format vaf;
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return;
trace_ext4_error(inode->i_sb, function, line);
es->s_last_error_ino = cpu_to_le32(inode->i_ino);
es->s_last_error_block = cpu_to_le64(block);
if (ext4_error_ratelimit(inode->i_sb)) {
va_start(args, fmt);
vaf.fmt = fmt;
@ -529,7 +585,8 @@ void __ext4_error_inode(struct inode *inode, const char *function,
current->comm, &vaf);
va_end(args);
}
save_error_info(inode->i_sb, function, line);
save_error_info(inode->i_sb, error, inode->i_ino, block,
function, line);
ext4_handle_error(inode->i_sb);
}
@ -548,7 +605,6 @@ void __ext4_error_file(struct file *file, const char *function,
trace_ext4_error(inode->i_sb, function, line);
es = EXT4_SB(inode->i_sb)->s_es;
es->s_last_error_ino = cpu_to_le32(inode->i_ino);
if (ext4_error_ratelimit(inode->i_sb)) {
path = file_path(file, pathname, sizeof(pathname));
if (IS_ERR(path))
@ -570,7 +626,8 @@ void __ext4_error_file(struct file *file, const char *function,
current->comm, path, &vaf);
va_end(args);
}
save_error_info(inode->i_sb, function, line);
save_error_info(inode->i_sb, EFSCORRUPTED, inode->i_ino, block,
function, line);
ext4_handle_error(inode->i_sb);
}
@ -614,66 +671,6 @@ const char *ext4_decode_error(struct super_block *sb, int errno,
return errstr;
}
void ext4_set_errno(struct super_block *sb, int err)
{
if (err < 0)
err = -err;
switch (err) {
case EIO:
err = EXT4_ERR_EIO;
break;
case ENOMEM:
err = EXT4_ERR_ENOMEM;
break;
case EFSBADCRC:
err = EXT4_ERR_EFSBADCRC;
break;
case EFSCORRUPTED:
err = EXT4_ERR_EFSCORRUPTED;
break;
case ENOSPC:
err = EXT4_ERR_ENOSPC;
break;
case ENOKEY:
err = EXT4_ERR_ENOKEY;
break;
case EROFS:
err = EXT4_ERR_EROFS;
break;
case EFBIG:
err = EXT4_ERR_EFBIG;
break;
case EEXIST:
err = EXT4_ERR_EEXIST;
break;
case ERANGE:
err = EXT4_ERR_ERANGE;
break;
case EOVERFLOW:
err = EXT4_ERR_EOVERFLOW;
break;
case EBUSY:
err = EXT4_ERR_EBUSY;
break;
case ENOTDIR:
err = EXT4_ERR_ENOTDIR;
break;
case ENOTEMPTY:
err = EXT4_ERR_ENOTEMPTY;
break;
case ESHUTDOWN:
err = EXT4_ERR_ESHUTDOWN;
break;
case EFAULT:
err = EXT4_ERR_EFAULT;
break;
default:
err = EXT4_ERR_UNKNOWN;
}
EXT4_SB(sb)->s_es->s_last_error_errcode = err;
}
/* __ext4_std_error decodes expected errors from journaling functions
* automatically and invokes the appropriate error response. */
@ -698,8 +695,7 @@ void __ext4_std_error(struct super_block *sb, const char *function,
sb->s_id, function, line, errstr);
}
ext4_set_errno(sb, -errno);
save_error_info(sb, function, line);
save_error_info(sb, -errno, 0, 0, function, line);
ext4_handle_error(sb);
}
@ -714,7 +710,7 @@ void __ext4_std_error(struct super_block *sb, const char *function,
*/
void __ext4_abort(struct super_block *sb, const char *function,
unsigned int line, const char *fmt, ...)
unsigned int line, int error, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
@ -722,7 +718,7 @@ void __ext4_abort(struct super_block *sb, const char *function,
if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))
return;
save_error_info(sb, function, line);
save_error_info(sb, error, 0, 0, function, line);
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
@ -741,7 +737,6 @@ void __ext4_abort(struct super_block *sb, const char *function,
sb->s_flags |= SB_RDONLY;
if (EXT4_SB(sb)->s_journal)
jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
save_error_info(sb, function, line);
}
if (test_opt(sb, ERRORS_PANIC) && !system_going_down()) {
if (EXT4_SB(sb)->s_journal &&
@ -815,15 +810,12 @@ __acquires(bitlock)
{
struct va_format vaf;
va_list args;
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))
return;
trace_ext4_error(sb, function, line);
es->s_last_error_ino = cpu_to_le32(ino);
es->s_last_error_block = cpu_to_le64(block);
__save_error_info(sb, function, line);
__save_error_info(sb, EFSCORRUPTED, ino, block, function, line);
if (ext4_error_ratelimit(sb)) {
va_start(args, fmt);
@ -1024,17 +1016,22 @@ static void ext4_put_super(struct super_block *sb)
destroy_workqueue(sbi->rsv_conversion_wq);
/*
* Unregister sysfs before destroying jbd2 journal.
* Since we could still access attr_journal_task attribute via sysfs
* path which could have sbi->s_journal->j_task as NULL
*/
ext4_unregister_sysfs(sb);
if (sbi->s_journal) {
aborted = is_journal_aborted(sbi->s_journal);
err = jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
if ((err < 0) && !aborted) {
ext4_set_errno(sb, -err);
ext4_abort(sb, "Couldn't clean up the journal");
ext4_abort(sb, -err, "Couldn't clean up the journal");
}
}
ext4_unregister_sysfs(sb);
ext4_es_unregister_shrinker(sbi);
del_timer_sync(&sbi->s_err_report);
ext4_release_system_zone(sb);
@ -2180,6 +2177,14 @@ static int parse_options(char *options, struct super_block *sb,
}
}
#endif
if (test_opt(sb, DIOREAD_NOLOCK)) {
int blocksize =
BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
if (blocksize < PAGE_SIZE)
ext4_msg(sb, KERN_WARNING, "Warning: mounting with an "
"experimental mount option 'dioread_nolock' "
"for blocksize < PAGE_SIZE");
}
return 1;
}
@ -3609,7 +3614,8 @@ int ext4_calculate_overhead(struct super_block *sb)
*/
if (sbi->s_journal && !sbi->journal_bdev)
overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
else if (ext4_has_feature_journal(sb) && !sbi->s_journal) {
else if (ext4_has_feature_journal(sb) && !sbi->s_journal && j_inum) {
/* j_inum for internal journal is non-zero */
j_inode = ext4_get_journal_inode(sb, j_inum);
if (j_inode) {
j_blocks = j_inode->i_size >> sb->s_blocksize_bits;
@ -3785,7 +3791,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_opt(sb, NO_UID32);
/* xattr user namespace & acls are now defaulted on */
set_opt(sb, XATTR_USER);
set_opt(sb, DIOREAD_NOLOCK);
#ifdef CONFIG_EXT4_FS_POSIX_ACL
set_opt(sb, POSIX_ACL);
#endif
@ -3835,6 +3840,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
blocksize = BLOCK_SIZE << le32_to_cpu(es->s_log_block_size);
if (blocksize == PAGE_SIZE)
set_opt(sb, DIOREAD_NOLOCK);
if (blocksize < EXT4_MIN_BLOCK_SIZE ||
blocksize > EXT4_MAX_BLOCK_SIZE) {
ext4_msg(sb, KERN_ERR,
@ -4157,7 +4166,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (sbi->s_inodes_per_group < sbi->s_inodes_per_block ||
sbi->s_inodes_per_group > blocksize * 8) {
ext4_msg(sb, KERN_ERR, "invalid inodes per group: %lu\n",
sbi->s_blocks_per_group);
sbi->s_inodes_per_group);
goto failed_mount;
}
sbi->s_itb_per_group = sbi->s_inodes_per_group /
@ -4286,9 +4295,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
EXT4_BLOCKS_PER_GROUP(sb) - 1);
do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb));
if (blocks_count > ((uint64_t)1<<32) - EXT4_DESC_PER_BLOCK(sb)) {
ext4_msg(sb, KERN_WARNING, "groups count too large: %u "
ext4_msg(sb, KERN_WARNING, "groups count too large: %llu "
"(block count %llu, first data block %u, "
"blocks per group %lu)", sbi->s_groups_count,
"blocks per group %lu)", blocks_count,
ext4_blocks_count(es),
le32_to_cpu(es->s_first_data_block),
EXT4_BLOCKS_PER_GROUP(sb));
@ -5433,7 +5442,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
}
if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
ext4_abort(sb, "Abort forced by user");
ext4_abort(sb, EXT4_ERR_ESHUTDOWN, "Abort forced by user");
sb->s_flags = (sb->s_flags & ~SB_POSIXACL) |
(test_opt(sb, POSIX_ACL) ? SB_POSIXACL : 0);
@ -5622,10 +5631,8 @@ static int ext4_statfs_project(struct super_block *sb,
return PTR_ERR(dquot);
spin_lock(&dquot->dq_dqb_lock);
limit = dquot->dq_dqb.dqb_bsoftlimit;
if (dquot->dq_dqb.dqb_bhardlimit &&
(!limit || dquot->dq_dqb.dqb_bhardlimit < limit))
limit = dquot->dq_dqb.dqb_bhardlimit;
limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit,
dquot->dq_dqb.dqb_bhardlimit);
limit >>= sb->s_blocksize_bits;
if (limit && buf->f_blocks > limit) {
@ -5637,11 +5644,8 @@ static int ext4_statfs_project(struct super_block *sb,
(buf->f_blocks - curblock) : 0;
}
limit = dquot->dq_dqb.dqb_isoftlimit;
if (dquot->dq_dqb.dqb_ihardlimit &&
(!limit || dquot->dq_dqb.dqb_ihardlimit < limit))
limit = dquot->dq_dqb.dqb_ihardlimit;
limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
dquot->dq_dqb.dqb_ihardlimit);
if (limit && buf->f_files > limit) {
buf->f_files = limit;
buf->f_ffree =

10
fs/ext4/xattr.c
View File

@ -245,7 +245,7 @@ __ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh,
bh->b_data);
errout:
if (error)
__ext4_error_inode(inode, function, line, 0,
__ext4_error_inode(inode, function, line, 0, -error,
"corrupted xattr block %llu",
(unsigned long long) bh->b_blocknr);
else
@ -269,7 +269,7 @@ __xattr_check_inode(struct inode *inode, struct ext4_xattr_ibody_header *header,
error = ext4_xattr_check_entries(IFIRST(header), end, IFIRST(header));
errout:
if (error)
__ext4_error_inode(inode, function, line, 0,
__ext4_error_inode(inode, function, line, 0, -error,
"corrupted in-inode xattr");
return error;
}
@ -2880,9 +2880,9 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
if (IS_ERR(bh)) {
error = PTR_ERR(bh);
if (error == -EIO) {
ext4_set_errno(inode->i_sb, EIO);
EXT4_ERROR_INODE(inode, "block %llu read error",
EXT4_I(inode)->i_file_acl);
EXT4_ERROR_INODE_ERR(inode, EIO,
"block %llu read error",
EXT4_I(inode)->i_file_acl);
}
bh = NULL;
goto cleanup;

4
fs/ext4/xattr.h
View File

@ -48,7 +48,7 @@ struct ext4_xattr_entry {
__le32 e_value_inum; /* inode in which the value is stored */
__le32 e_value_size; /* size of attribute value */
__le32 e_hash; /* hash value of name and value */
char e_name[0]; /* attribute name */
char e_name[]; /* attribute name */
};
#define EXT4_XATTR_PAD_BITS 2
@ -118,7 +118,7 @@ struct ext4_xattr_ibody_find {
struct ext4_xattr_inode_array {
unsigned int count; /* # of used items in the array */
struct inode *inodes[0];
struct inode *inodes[];
};
extern const struct xattr_handler ext4_xattr_user_handler;

7
fs/jbd2/commit.c
View File

@ -997,9 +997,10 @@ restart_loop:
* journalled data) we need to unmap buffer and clear
* more bits. We also need to be careful about the check
* because the data page mapping can get cleared under
* out hands, which alse need not to clear more bits
* because the page and buffers will be freed and can
* never be reused once we are done with them.
* our hands. Note that if mapping == NULL, we don't
* need to make buffer unmapped because the page is
* already detached from the mapping and buffers cannot
* get reused.
*/
mapping = READ_ONCE(bh->b_page->mapping);
if (mapping && !sb_is_blkdev_sb(mapping->host->i_sb)) {