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| author | Mark Fasheh <mark.fasheh@oracle.com> | 2007-03-01 11:01:55 -0800 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2007-04-26 15:02:26 -0700 |
| commit | 5b04aa3a64f854244bc40a6f528176ed50b5c4f6 (patch) | |
| tree | 2bdee522ce482f06a9f3adc8e66e4ff23be06860 | |
| parent | 60b11392f1a09433740bda3048202213daa27736 (diff) | |
| download | lwn-5b04aa3a64f854244bc40a6f528176ed50b5c4f6.tar.gz lwn-5b04aa3a64f854244bc40a6f528176ed50b5c4f6.zip | |
[PATCH] Turn do_sync_file_range() into do_sync_mapping_range()
do_sync_file_range() accepts a file * from which it takes an address_space to
sync. Abstract out the bulk of the function into do_sync_mapping_range()
which takes the address_space directly. This way callers who want to sync an
address_space directly can take advantage of the functionality provided.
do_sync_file_range() is preserved as a small wrapper around
do_sync_mapping_range().
Ocfs2 in particular would like to use this to initiate a sync of a specific
inode range during truncate, where a file * may not be available.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | fs/sync.c | 8 | ||||
| -rw-r--r-- | include/linux/fs.h | 9 |
2 files changed, 10 insertions, 7 deletions
diff --git a/fs/sync.c b/fs/sync.c index d0feff61e6aa..5cb9e7e43383 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -239,13 +239,11 @@ out: /* * `endbyte' is inclusive */ -int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte, - unsigned int flags) +int do_sync_mapping_range(struct address_space *mapping, loff_t offset, + loff_t endbyte, unsigned int flags) { int ret; - struct address_space *mapping; - mapping = file->f_mapping; if (!mapping) { ret = -EINVAL; goto out; @@ -275,4 +273,4 @@ int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte, out: return ret; } -EXPORT_SYMBOL_GPL(do_sync_file_range); +EXPORT_SYMBOL_GPL(do_sync_mapping_range); diff --git a/include/linux/fs.h b/include/linux/fs.h index 86ec3f4a7da6..095a9c9a64fb 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -843,8 +843,13 @@ extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg); extern int fcntl_getlease(struct file *filp); /* fs/sync.c */ -extern int do_sync_file_range(struct file *file, loff_t offset, loff_t endbyte, - unsigned int flags); +extern int do_sync_mapping_range(struct address_space *mapping, loff_t offset, + loff_t endbyte, unsigned int flags); +static inline int do_sync_file_range(struct file *file, loff_t offset, + loff_t endbyte, unsigned int flags) +{ + return do_sync_mapping_range(file->f_mapping, offset, endbyte, flags); +} /* fs/locks.c */ extern void locks_init_lock(struct file_lock *); |