diff options
| author | Christoph Hellwig <hch@lst.de> | 2002-08-12 18:06:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.transmeta.com> | 2002-08-12 18:06:55 -0700 |
| commit | 8c0b388ab19c6a0c1a726ec00c445038d4da7fdc (patch) | |
| tree | 5f426a93200593d9eeed8a65044fafb290bc2d7a /include/linux | |
| parent | 630986cd7db778443b1a8dd4d1f0afcab5870aa0 (diff) | |
[PATCH] i_sem-less generic_file_write for O_DIRECT & XFS
There are a number of places where generic_file_write could be used if
it didn't take i_sem by itself or where it doesn't need it:
(1) XFS needs to do some preparation in it's write file operation
(most notably taking it's own per-inode locks), after taking
i_sem, but before calling the guts of generic_file_write.
(2) blockdevices are happy with parralel get_block() operations,
and there is nothing i_sem could protect.
This patch introduces a generic_file_write_nolock and makes the good old
generic_file_write a wrapper around. The block device code is switched
over to it.
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 192107379fd9..ec0f6edac31b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1241,6 +1241,7 @@ extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size); extern ssize_t generic_file_read(struct file *, char *, size_t, loff_t *); extern ssize_t generic_file_write(struct file *, const char *, size_t, loff_t *); +extern ssize_t generic_file_write_nolock(struct file *, const char *, size_t, loff_t *); extern ssize_t generic_file_sendfile(struct file *, struct file *, loff_t *, size_t); extern void do_generic_file_read(struct file *, loff_t *, read_descriptor_t *, read_actor_t); ssize_t generic_file_direct_IO(int rw, struct inode *inode, char *buf, |