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Mingming ba230c3f6d ext4: Fix return value of ext4_split_unwritten_extents() to fix direct I/O 
To prepare for a direct I/O write, we need to split the unwritten
extents before submitting the I/O.  When no extents needed to be
split, ext4_split_unwritten_extents() was incorrectly returning 0
instead of the size of uninitialized extents. This bug caused the
wrong return value sent back to VFS code when it gets called from
async IO path, leading to an unnecessary fall back to buffered IO.

This bug also hid the fact that the check to see whether or not a
split would be necessary was incorrect; we can only skip splitting the
extent if the write completely covers the uninitialized extent.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-11-06 04:01:23 -05:00
..
9p
9p: fix readdir corner cases
2009-11-02 08:43:45 -06:00
adfs
adfs: remove redundant test on unsigned
2009-09-24 07:21:05 -07:00
affs
affs: add ->sync_fs
2009-06-11 21:36:14 -04:00
afs
afs: remove cache.h
2009-10-01 16:11:16 -07:00
autofs
trivial: remove unnecessary semicolons
2009-09-21 15:14:58 +02:00
autofs4
autofs4 - fix missed case when changing to use struct path
2009-08-31 17:44:05 -10:00
befs
fs: Make unload_nls() NULL pointer safe
2009-09-24 07:47:42 -04:00
bfs
headers: smp_lock.h redux
2009-07-12 12:22:34 -07:00
btrfs
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
2009-10-15 15:06:37 -07:00
cachefiles
enforce ->sync_fs is only called for rw superblock
2009-06-11 21:36:06 -04:00
cifs
[CIFS] Fixing to avoid invalid kfree() in cifs_get_tcp_session()
2009-10-06 18:31:29 +00:00
coda
headers: remove sched.h from poll.h
2009-10-04 15:05:10 -07:00
configfs
writeback: add name to backing_dev_info
2009-09-11 09:20:26 +02:00
cramfs
…
debugfs
debugfs: use specified mode to possibly mark files read/write only
2009-06-15 21:30:28 -07:00
devpts
Move magic numbers into magic.h
2009-09-23 07:39:28 -07:00
dlm
dlm: fix socket fd translation
2009-09-30 12:19:44 -05:00
ecryptfs
ima: ecryptfs fix imbalance message
2009-10-08 11:31:38 -05:00
efs
get rid of BKL in fs/efs
2009-06-17 00:36:36 -04:00
exofs
exofs: remove BKL from super operations
2009-09-24 07:47:38 -04:00
exportfs
…
ext2
Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
2009-09-24 07:53:22 -07:00
ext3
ext3: Don't update superblock write time when filesystem is read-only
2009-10-13 00:06:43 +02:00
ext4
ext4: Fix return value of ext4_split_unwritten_extents() to fix direct I/O
2009-11-06 04:01:23 -05:00
fat
Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
2009-09-30 09:31:14 -07:00
freevxfs
headers: smp_lock.h redux
2009-07-12 12:22:34 -07:00
fscache
…
fuse
const: mark struct vm_struct_operations
2009-09-27 11:39:25 -07:00
gfs2
const: mark struct vm_struct_operations
2009-09-27 11:39:25 -07:00
hfs
hfs: fix oops on mount with corrupted btree extent records
2009-10-29 07:39:29 -07:00
hfsplus
hfsplus: refuse to mount volumes larger than 2TB
2009-10-29 07:39:27 -07:00
hostfs
hostfs: set maximum filesize in superblock for proper LFS support
2009-06-30 18:56:03 -07:00
hpfs
headers: smp_lock.h redux
2009-07-12 12:22:34 -07:00
hppfs
…
hugetlbfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-09-24 08:32:11 -07:00
isofs
fs: Make unload_nls() NULL pointer safe
2009-09-24 07:47:42 -04:00
jbd
jbd: Annotate transaction start also for journal_restart()
2009-09-16 17:44:10 +02:00
jbd2
const: constify remaining file_operations
2009-10-01 16:11:11 -07:00
jffs2
Merge git://git.infradead.org/mtd-2.6
2009-09-23 10:07:49 -07:00
jfs
fs: Make unload_nls() NULL pointer safe
2009-09-24 07:47:42 -04:00
lockd
headers: utsname.h redux
2009-09-23 18:13:10 -07:00
minix
V3 minixfs: add missing directory type checking
2009-09-23 07:39:57 -07:00
ncpfs
const: mark struct vm_struct_operations
2009-09-27 11:39:25 -07:00
nfs
NFSv4: The link() operation should return any delegation on the file
2009-10-26 08:09:46 -04:00
nfs_common
…
nfsd
const: constify remaining file_operations
2009-10-01 16:11:11 -07:00
nilfs2
nilfs2: add zero-fill for new btree node buffers
2009-11-03 12:32:03 +09:00
nls
Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
2009-09-30 09:31:14 -07:00
notify
dnotify: ignore FS_EVENT_ON_CHILD
2009-10-20 18:02:33 -04:00
ntfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-09-24 08:32:11 -07:00
ocfs2
const: constify remaining file_operations
2009-10-01 16:11:11 -07:00
omfs
const: constify remaining file_operations
2009-10-01 16:11:11 -07:00
openpromfs
…
partitions
block: Seperate read and write statistics of in_flight requests v2
2009-10-06 20:16:55 +02:00
proc
hwpoison: fix/proc/meminfo alignment
2009-10-29 07:39:25 -07:00
qnx4
qnx4: remove write support
2009-09-23 07:39:30 -07:00
quota
const: make struct super_block::s_qcop const
2009-09-22 07:17:24 -07:00
ramfs
truncate: use new helpers
2009-09-24 08:41:47 -04:00
reiserfs
const: make struct super_block::s_qcop const
2009-09-22 07:17:24 -07:00
romfs
ROMFS: fix length used with romfs_dev_strnlen() function
2009-10-11 11:33:56 -07:00
smbfs
fs: Make unload_nls() NULL pointer safe
2009-09-24 07:47:42 -04:00
squashfs
const: mark remaining super_operations const
2009-09-22 07:17:24 -07:00
sysfs
sysfs: Allow sysfs_notify_dirent to be called from interrupt context.
2009-10-14 15:16:25 -07:00
sysv
get rid of BKL in fs/sysv
2009-06-17 00:36:37 -04:00
ubifs
const: mark struct vm_struct_operations
2009-09-27 11:39:25 -07:00
udf
udf: Fix possible corruption when close races with write
2009-09-14 19:13:01 +02:00
ufs
ufs: sector_t cannot be negative
2009-06-18 13:03:46 -07:00
xfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/fs/xfs/xfs
2009-10-31 12:12:49 -07:00
aio.c
aio.c: move EXPORT* macros to line after function
2009-09-23 07:39:29 -07:00
anon_inodes.c
headers: remove sched.h from poll.h
2009-10-04 15:05:10 -07:00
attr.c
truncate: new helpers
2009-09-24 08:41:47 -04:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
fdpic: ignore the loader's PT_GNU_STACK when calculating the stack size
2009-09-24 07:21:02 -07:00
binfmt_elf.c
elf: clean up fill_note_info()
2009-09-24 07:21:01 -07:00
binfmt_em86.c
…
binfmt_flat.c
flat: use IS_ERR_VALUE() helper macro
2009-09-24 07:21:03 -07:00
binfmt_misc.c
…
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
block: Create bip slabs with embedded integrity vectors
2009-07-01 10:56:25 +02:00
bio.c
fs/bio.c: move EXPORT* macros to line after function
2009-10-01 21:15:46 +02:00
block_dev.c
block: use after free bug in __blkdev_get
2009-10-26 15:27:11 +01:00
buffer.c
Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block
2009-09-25 09:27:30 -07:00
char_dev.c
fs/char_dev.c: remove useless loop
2009-09-24 07:21:03 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
compat_ioctl: hook up compat handler for FIEMAP ioctl
2009-08-07 10:39:56 -07:00
compat.c
fs: fix overflow in sys_mount() for in-kernel calls
2009-09-24 08:40:15 -04:00
dcache.c
sched: Pull up the might_sleep() check into cond_resched()
2009-07-18 15:51:44 +02:00
dcookies.c
…
direct-io.c
…
drop_caches.c
sysctl: remove "struct file *" argument of ->proc_handler
2009-09-24 07:21:04 -07:00
eventfd.c
anonfd: split interface into file creation and install
2009-09-23 07:39:29 -07:00
eventpoll.c
epoll: fix nested calls support
2009-06-18 13:03:41 -07:00
exec.c
task_struct cleanup: move binfmt field to mm_struct
2009-09-24 07:21:05 -07:00
fcntl.c
fcntl: add F_[SG]ETOWN_EX
2009-09-24 07:21:01 -07:00
fifo.c
…
file_table.c
sysctl: remove "struct file *" argument of ->proc_handler
2009-09-24 07:21:04 -07:00
file.c
headers: remove sched.h from interrupt.h
2009-10-11 11:20:58 -07:00
filesystems.c
…
fs_struct.c
…
fs-writeback.c
writeback: pass in super_block to bdi_start_writeback()
2009-09-26 00:10:40 +02:00
generic_acl.c
…
inode.c
vfs: optimize touch_time() too
2009-09-24 07:47:27 -04:00
internal.h
fs: fix overflow in sys_mount() for in-kernel calls
2009-09-24 08:40:15 -04:00
ioctl.c
vfs: explicitly cast s_maxbytes in fiemap_check_ranges
2009-09-24 07:47:31 -04:00
ioprio.c
…
Kconfig
Merge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2009-10-29 09:07:15 -07:00
Kconfig.binfmt
…
libfs.c
libfs: return error code on failed attr set
2009-09-24 07:47:30 -04:00
locks.c
const: make lock_manager_operations const
2009-09-22 07:17:25 -07:00
Makefile
…
mbcache.c
…
mpage.c
…
namei.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2009-09-11 08:55:49 -07:00
namespace.c
fs: fix overflow in sys_mount() for in-kernel calls
2009-09-24 08:40:15 -04:00
nfsctl.c
…
no-block.c
…
open.c
fs: change sys_truncate length parameter type
2009-09-23 09:21:05 -07:00
pipe.c
fs: pipe.c null pointer dereference
2009-10-22 08:11:44 +09:00
pnode.c
…
pnode.h
…
posix_acl.c
…
read_write.c
vfs: remove redundant position check in do_sendfile
2009-09-24 07:47:34 -04:00
read_write.h
…
readdir.c
…
select.c
headers: remove sched.h from poll.h
2009-10-04 15:05:10 -07:00
seq_file.c
vfs: seq_file: add helpers for data filling
2009-09-24 07:47:35 -04:00
signalfd.c
…
splice.c
Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block
2009-09-14 17:55:15 -07:00
stack.c
…
stat.c
…
super.c
freeze_bdev: grab active reference to frozen superblocks
2009-09-24 07:47:41 -04:00
sync.c
fs/buffer.c: clean up EXPORT* macros
2009-09-23 07:39:29 -07:00
timerfd.c
…
utimes.c
…
xattr_acl.c
…
xattr.c
VFS: Factor out part of vfs_setxattr so it can be called from the SELinux hook for inode_setsecctx.
2009-09-10 10:11:22 +10:00