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 /kernel | |
| 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 'kernel')
| -rw-r--r-- | kernel/ksyms.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/ksyms.c b/kernel/ksyms.c index 9ea5bbcac656..b1166d911319 100644 --- a/kernel/ksyms.c +++ b/kernel/ksyms.c @@ -222,6 +222,7 @@ EXPORT_SYMBOL(generic_file_read); EXPORT_SYMBOL(generic_file_sendfile); EXPORT_SYMBOL(do_generic_file_read); EXPORT_SYMBOL(generic_file_write); +EXPORT_SYMBOL(generic_file_write_nolock); EXPORT_SYMBOL(generic_file_mmap); EXPORT_SYMBOL(generic_ro_fops); EXPORT_SYMBOL(file_lock_list); |