Mingming 109f556519 ext4: fix ext4_ext_direct_IO()'s return value after converting uninit extents ...

After a direct I/O request covering an uninitalized extent (i.e.,
created using the fallocate system call) or a hole in a file, ext4
will convert the uninitialized extent so it is marked as initialized
by calling ext4_convert_unwritten_extents().  This function returns
zero on success.

This return value was getting returned by ext4_direct_IO(); however
the file system's direct_IO function is supposed to return the number
of bytes read or written on a success.  By returning zero, it confused
the direct I/O code into falling back to buffered I/O unnecessarily.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

2009-11-10 10:48:08 -05:00

..

acl.c

ext[234]: move over to 'check_acl' permission model

2009-09-08 11:09:04 -07:00

acl.h

ext[234]: move over to 'check_acl' permission model

2009-09-08 11:09:04 -07:00

balloc.c

ext4: open-code ext4_mb_update_group_info

2009-08-17 23:51:29 -04:00

bitmap.c

…

block_validity.c

…

dir.c

…

ext4_extents.h

ext4: Split uninitialized extents for direct I/O

2009-09-28 15:49:08 -04:00

ext4_jbd2.c

ext4: Assure that metadata blocks are written during fsync in no journal mode

2009-09-12 13:41:55 -04:00

ext4_jbd2.h

ext4: Handle nested ext4_journal_start/stop calls without a journal

2009-09-29 11:01:03 -04:00

ext4.h

Revert "ext4: Remove journal_checksum mount option and enable it by default"

2009-11-02 10:15:27 -08:00

extents.c

ext4: fix ext4_ext_direct_IO()'s return value after converting uninit extents

2009-11-10 10:48:08 -05:00

file.c

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

fsync.c

ext4: async direct IO for holes and fallocate support

2009-09-28 15:48:29 -04:00

hash.c

…

ialloc.c

ext4: fix build warning when EXT4FS_DEBUG is on

2009-07-27 21:44:40 -04:00

inode.c

ext4: fix ext4_ext_direct_IO()'s return value after converting uninit extents

2009-11-10 10:48:08 -05:00

ioctl.c

ext4: Return exchanged blocks count to user space in failure

2009-09-05 22:46:29 -04:00

Kconfig

ext4: drop ext4dev compat

2009-10-01 02:21:07 -04:00

Makefile

…

mballoc.c

ext4: Use tracepoints for mb_history trace file

2009-09-30 00:32:42 -04:00

mballoc.h

ext4: Use tracepoints for mb_history trace file

2009-09-30 00:32:42 -04:00

migrate.c

ext4: Split uninitialized extents for direct I/O

2009-09-28 15:49:08 -04:00

move_extent.c

ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first

2009-09-28 15:58:29 -04:00

namei.c

ext4: Handle nested ext4_journal_start/stop calls without a journal

2009-09-29 11:01:03 -04:00

resize.c

ext4: Clarify the locking details in mballoc

2009-09-09 23:50:17 -04:00

super.c

Revert "ext4: Remove journal_checksum mount option and enable it by default"

2009-11-02 10:15:27 -08:00

symlink.c

…

xattr_security.c

…

xattr_trusted.c

…

xattr_user.c

…

xattr.c

ext4: limit block allocations for indirect-block files to < 2^32

2009-09-16 14:45:10 -04:00

xattr.h

…