The patch titled
Subject: vfs: guard end of device for mpage interface
has been removed from the -mm tree. Its filename was
vfs-guard-end-of-device-for-mpage-interface.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Subject: 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@xxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/buffer.c | 2 +-
fs/internal.h | 5 +++++
fs/mpage.c | 2 ++
3 files changed, 8 insertions(+), 1 deletion(-)
diff -puN fs/buffer.c~vfs-guard-end-of-device-for-mpage-interface fs/buffer.c
--- a/fs/buffer.c~vfs-guard-end-of-device-for-mpage-interface
+++ a/fs/buffer.c
@@ -2966,7 +2966,7 @@ static void end_bio_bh_io_sync(struct bi
* 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];
diff -puN fs/internal.h~vfs-guard-end-of-device-for-mpage-interface fs/internal.h
--- a/fs/internal.h~vfs-guard-end-of-device-for-mpage-interface
+++ a/fs/internal.h
@@ -35,6 +35,11 @@ static inline int __sync_blockdev(struct
#endif
/*
+ * buffer.c
+ */
+extern void guard_bio_eod(int rw, struct bio *bio);
+
+/*
* char_dev.c
*/
extern void __init chrdev_init(void);
diff -puN fs/mpage.c~vfs-guard-end-of-device-for-mpage-interface fs/mpage.c
--- a/fs/mpage.c~vfs-guard-end-of-device-for-mpage-interface
+++ a/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
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;
}
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
origin.patch
linux-next.patch
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