]> git.baikalelectronics.ru Git - kernel.git/commit
fuse: add flag to turn on big writes
authorMiklos Szeredi <mszeredi@suse.cz>
Mon, 12 May 2008 21:02:32 +0000 (14:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 13 May 2008 15:02:26 +0000 (08:02 -0700)
commit5542e5ed43b70ccc181cc38bd0c27325a774669d
tree330cc4fd17af9176ae9e2ee833e1097638fd1b30
parent4fe57bdcc4a2ef4d4e188ca9b38bb8f9549f3588
fuse: add flag to turn on big writes

Prior to 2.6.26 fuse only supported single page write requests.  In theory all
fuse filesystem should be able support bigger than 4k writes, as there's
nothing in the API to prevent it.  Unfortunately there's a known case in
NTFS-3G where big writes cause filesystem corruption.  There could also be
other filesystems, where the lack of testing with big write requests would
result in bugs.

To prevent such problems on a kernel upgrade, disable big writes by default,
but let filesystems set a flag to turn it on.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Szabolcs Szakacsits <szaka@ntfs-3g.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/fuse/file.c
fs/fuse/fuse_i.h
fs/fuse/inode.c
include/linux/fuse.h