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authorChristoph Hellwig <hch@lst.de>2011-01-14 13:07:43 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-17 02:25:31 -0500
commit2fe17c1075836b66678ed2a305fd09b6773883aa (patch)
treeeb5287be8138686682eef9622872cfc7657e0664 /include
parent64c23e86873ee410554d6d1c76b60da47025e96f (diff)
downloadlinux-2fe17c1075836b66678ed2a305fd09b6773883aa.tar.bz2
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 'include')
-rw-r--r--include/linux/fs.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 177b4ddea418..09b5bd6a7c6b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1552,6 +1552,8 @@ struct file_operations {
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
int (*setlease)(struct file *, long, struct file_lock **);
+ long (*fallocate)(struct file *file, int mode, loff_t offset,
+ loff_t len);
};
#define IPERM_FLAG_RCU 0x0001
@@ -1582,8 +1584,6 @@ struct inode_operations {
ssize_t (*listxattr) (struct dentry *, char *, size_t);
int (*removexattr) (struct dentry *, const char *);
void (*truncate_range)(struct inode *, loff_t, loff_t);
- long (*fallocate)(struct inode *inode, int mode, loff_t offset,
- loff_t len);
int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
u64 len);
} ____cacheline_aligned;