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| author | Christoph Hellwig <hch@lst.de> | 2011-01-14 13:07:43 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-01-17 02:25:31 -0500 |
| commit | 2fe17c1075836b66678ed2a305fd09b6773883aa (patch) | |
| tree | eb5287be8138686682eef9622872cfc7657e0664 /fs/ext4/ext4.h | |
| parent | 64c23e86873ee410554d6d1c76b60da47025e96f (diff) | |
| download | blackbird-obmc-linux-2fe17c1075836b66678ed2a305fd09b6773883aa.tar.gz blackbird-obmc-linux-2fe17c1075836b66678ed2a305fd09b6773883aa.zip | |
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>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 1de65f572033..0c8d97b56f34 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2065,7 +2065,7 @@ extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, extern void ext4_ext_truncate(struct inode *); extern void ext4_ext_init(struct super_block *); extern void ext4_ext_release(struct super_block *); -extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset, +extern long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len); extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset, ssize_t len); |
