kernel_optimize_test/fs/ext4
Christoph Hellwig 2fe17c1075 fallocate should be a file operation
Currently all filesystems except XFS implement fallocate asynchronously,
while XFS forced a commit.  Both of these are suboptimal - in case of O_SYNC
I/O we really want our allocation on disk, especially for the !KEEP_SIZE
case where we actually grow the file with user-visible zeroes.  On the
other hand always commiting the transaction is a bad idea for fast-path
uses of fallocate like for example in recent Samba versions.   Given
that block allocation is a data plane operation anyway change it from
an inode operation to a file operation so that we have the file structure
available that lets us check for O_SYNC.

This also includes moving the code around for a few of the filesystems,
and remove the already unnedded S_ISDIR checks given that we only wire
up fallocate for regular files.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-01-17 02:25:31 -05:00
..
acl.c
acl.h
balloc.c
bitmap.c
block_validity.c
dir.c
ext4_extents.h
ext4_jbd2.c
ext4_jbd2.h
ext4.h
extents.c
file.c
fsync.c
hash.c
ialloc.c
inode.c
ioctl.c
Kconfig
Makefile
mballoc.c
mballoc.h
migrate.c
move_extent.c
namei.c
page-io.c
resize.c
super.c
symlink.c
xattr_security.c
xattr_trusted.c
xattr_user.c
xattr.c
xattr.h