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Miscellaneous bug fixes and cleanups for ext4, including a fix for

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generic/388 in data=journal mode, removing some BUG_ON's, and cleaning
 up some compiler warnings.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Miscellaneous bug fixes and cleanups for ext4, including a fix for
  generic/388 in data=journal mode, removing some BUG_ON's, and cleaning
  up some compiler warnings"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: convert BUG_ON's to WARN_ON's in mballoc.c
  ext4: increase wait time needed before reuse of deleted inode numbers
  ext4: remove set but not used variable 'es' in ext4_jbd2.c
  ext4: remove set but not used variable 'es'
  ext4: do not zeroout extents beyond i_disksize
  ext4: fix return-value types in several function comments
  ext4: use non-movable memory for superblock readahead
  ext4: use matching invalidatepage in ext4_writepage
This commit is contained in:
Linus Torvalds 2020-04-19 11:05:15 -07:00
commit 439f1da923
9 changed files with 34 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
fs/buffer.c
View File

@ -1371,6 +1371,17 @@ void __breadahead(struct block_device *bdev, sector_t block, unsigned size)
}
EXPORT_SYMBOL(__breadahead);
void __breadahead_gfp(struct block_device *bdev, sector_t block, unsigned size,
gfp_t gfp)
{
struct buffer_head *bh = __getblk_gfp(bdev, block, size, gfp);
if (likely(bh)) {
ll_rw_block(REQ_OP_READ, REQ_RAHEAD, 1, &bh);
brelse(bh);
}
}
EXPORT_SYMBOL(__breadahead_gfp);
/**
* __bread_gfp() - reads a specified block and returns the bh
* @bdev: the block_device to read from

4
fs/ext4/balloc.c
View File

@ -410,7 +410,7 @@ verified:
* Read the bitmap for a given block_group,and validate the
* bits for block/inode/inode tables are set in the bitmaps
*
* Return buffer_head on success or NULL in case of failure.
* Return buffer_head on success or an ERR_PTR in case of failure.
*/
struct buffer_head *
ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
@ -502,7 +502,7 @@ out:
return ERR_PTR(err);
}
/* Returns 0 on success, 1 on error */
/* Returns 0 on success, -errno on error */
int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group,
struct buffer_head *bh)
{

3
fs/ext4/ext4_jbd2.c
View File

@ -338,9 +338,6 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
if (inode && inode_needs_sync(inode)) {
sync_dirty_buffer(bh);
if (buffer_req(bh) && !buffer_uptodate(bh)) {
struct ext4_super_block *es;
es = EXT4_SB(inode->i_sb)->s_es;
ext4_error_inode_err(inode, where, line,
bh->b_blocknr, EIO,
"IO error syncing itable block");

8
fs/ext4/extents.c
View File

@ -3374,8 +3374,8 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
(unsigned long long)map->m_lblk, map_len);
sbi = EXT4_SB(inode->i_sb);
eof_block = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
inode->i_sb->s_blocksize_bits;
eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1)
>> inode->i_sb->s_blocksize_bits;
if (eof_block < map->m_lblk + map_len)
eof_block = map->m_lblk + map_len;
@ -3627,8 +3627,8 @@ static int ext4_split_convert_extents(handle_t *handle,
__func__, inode->i_ino,
(unsigned long long)map->m_lblk, map->m_len);
eof_block = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
inode->i_sb->s_blocksize_bits;
eof_block = (EXT4_I(inode)->i_disksize + inode->i_sb->s_blocksize - 1)
>> inode->i_sb->s_blocksize_bits;
if (eof_block < map->m_lblk + map->m_len)
eof_block = map->m_lblk + map->m_len;
/*

4
fs/ext4/ialloc.c
View File

@ -113,7 +113,7 @@ verified:
* Read the inode allocation bitmap for a given block_group, reading
* into the specified slot in the superblock's bitmap cache.
*
* Return buffer_head of bitmap on success or NULL.
* Return buffer_head of bitmap on success, or an ERR_PTR on error.
*/
static struct buffer_head *
ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
@ -662,7 +662,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
* block has been written back to disk. (Yes, these values are
* somewhat arbitrary...)
*/
#define RECENTCY_MIN 5
#define RECENTCY_MIN 60
#define RECENTCY_DIRTY 300
static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino)

4
fs/ext4/inode.c
View File

@ -1973,7 +1973,7 @@ static int ext4_writepage(struct page *page,
bool keep_towrite = false;
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) {
ext4_invalidatepage(page, 0, PAGE_SIZE);
inode->i_mapping->a_ops->invalidatepage(page, 0, PAGE_SIZE);
unlock_page(page);
return -EIO;
}
@ -4364,7 +4364,7 @@ make_io:
if (end > table)
end = table;
while (b <= end)
sb_breadahead(sb, b++);
sb_breadahead_unmovable(sb, b++);
}
/*

6
fs/ext4/mballoc.c
View File

@ -1943,7 +1943,8 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
int free;
free = e4b->bd_info->bb_free;
BUG_ON(free <= 0);
if (WARN_ON(free <= 0))
return;
i = e4b->bd_info->bb_first_free;
@ -1966,7 +1967,8 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
}
mb_find_extent(e4b, i, ac->ac_g_ex.fe_len, &ex);
BUG_ON(ex.fe_len <= 0);
if (WARN_ON(ex.fe_len <= 0))
break;
if (free < ex.fe_len) {
ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
"%d free clusters as per "

4
fs/ext4/super.c
View File

@ -596,7 +596,6 @@ void __ext4_error_file(struct file *file, const char *function,
{
va_list args;
struct va_format vaf;
struct ext4_super_block *es;
struct inode *inode = file_inode(file);
char pathname[80], *path;
@ -604,7 +603,6 @@ void __ext4_error_file(struct file *file, const char *function,
return;
trace_ext4_error(inode->i_sb, function, line);
es = EXT4_SB(inode->i_sb)->s_es;
if (ext4_error_ratelimit(inode->i_sb)) {
path = file_path(file, pathname, sizeof(pathname));
if (IS_ERR(path))
@ -4340,7 +4338,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
/* Pre-read the descriptors into the buffer cache */
for (i = 0; i < db_count; i++) {
block = descriptor_loc(sb, logical_sb_block, i);
sb_breadahead(sb, block);
sb_breadahead_unmovable(sb, block);
}
for (i = 0; i < db_count; i++) {

8
include/linux/buffer_head.h
View File

@ -189,6 +189,8 @@ struct buffer_head *__getblk_gfp(struct block_device *bdev, sector_t block,
void __brelse(struct buffer_head *);
void __bforget(struct buffer_head *);
void __breadahead(struct block_device *, sector_t block, unsigned int size);
void __breadahead_gfp(struct block_device *, sector_t block, unsigned int size,
gfp_t gfp);
struct buffer_head *__bread_gfp(struct block_device *,
sector_t block, unsigned size, gfp_t gfp);
void invalidate_bh_lrus(void);
@ -319,6 +321,12 @@ sb_breadahead(struct super_block *sb, sector_t block)
__breadahead(sb->s_bdev, block, sb->s_blocksize);
}
static inline void
sb_breadahead_unmovable(struct super_block *sb, sector_t block)
{
__breadahead_gfp(sb->s_bdev, block, sb->s_blocksize, 0);
}
static inline struct buffer_head *
sb_getblk(struct super_block *sb, sector_t block)
{