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authorAkinobu Mita <akinobu.mita@gmail.com>2014-10-09 15:26:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 22:25:53 -0400
commit4db96b71e3caea5bb39053d57683129e0682c66f (patch)
treeed8deca97f1b2beb3f73a79a8112d8819fd2df2c /fs/internal.h
parent59d43914ed7b96255271ad6b7b735344beffa3c0 (diff)
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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.h5
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);