diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2014-10-09 15:26:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-09 22:25:53 -0400 |
| commit | 4db96b71e3caea5bb39053d57683129e0682c66f (patch) | |
| tree | ed8deca97f1b2beb3f73a79a8112d8819fd2df2c /fs/buffer.c | |
| parent | 59d43914ed7b96255271ad6b7b735344beffa3c0 (diff) | |
| download | lwn-4db96b71e3caea5bb39053d57683129e0682c66f.tar.gz lwn-4db96b71e3caea5bb39053d57683129e0682c66f.zip | |
vfs: guard end of device for mpage interface
Add guard_bio_eod() check for mpage code in order to allow us to do IO
even on the odd last sectors of a device, even if the block size is some
multiple of the physical sector size.
Using mpage_readpages() for block device requires this guard check.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index e442a26e80f7..7bd5c4685e98 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2966,7 +2966,7 @@ static void end_bio_bh_io_sync(struct bio *bio, int err) * errors, this only handles the "we need to be able to * do IO at the final sector" case. */ -static void guard_bio_eod(int rw, struct bio *bio) +void guard_bio_eod(int rw, struct bio *bio) { sector_t maxsector; struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1]; |