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authorAkinobu Mita <akinobu.mita@gmail.com>2014-10-10 02:26:55 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-10 06:25:53 +0400
commit4db96b71e3caea5bb39053d57683129e0682c66f (patch)
treeed8deca97f1b2beb3f73a79a8112d8819fd2df2c /fs/mpage.c
parent59d43914ed7b96255271ad6b7b735344beffa3c0 (diff)
downloadlinux-4db96b71e3caea5bb39053d57683129e0682c66f.tar.xz
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/mpage.c')
-rw-r--r--fs/mpage.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/mpage.c b/fs/mpage.c
index 5f9ed622274f..3e79220babac 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -28,6 +28,7 @@
#include <linux/backing-dev.h>
#include <linux/pagevec.h>
#include <linux/cleancache.h>
+#include "internal.h"
/*
* I/O completion handler for multipage BIOs.
@@ -57,6 +58,7 @@ static void mpage_end_io(struct bio *bio, int err)
static struct bio *mpage_bio_submit(int rw, struct bio *bio)
{
bio->bi_end_io = mpage_end_io;
+ guard_bio_eod(rw, bio);
submit_bio(rw, bio);
return NULL;
}