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/internal.h | |
| 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/internal.h')
| -rw-r--r-- | fs/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/internal.h b/fs/internal.h index e325b4f9c799..b2623200107b 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -35,6 +35,11 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait) #endif /* + * buffer.c + */ +extern void guard_bio_eod(int rw, struct bio *bio); + +/* * char_dev.c */ extern void __init chrdev_init(void); |