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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-13 23:06:40 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-13 23:06:40 -0400
commit3711d86a2de17e967b576af8b8a1e9351a7d1466 (patch)
treef7d6028b81a475a83a6c2471645e0202b2b5f427 /fs
parent89dc77bcdabf42ec99553f5837aa4bb8255a088c (diff)
parenta8855990e382fc81c04187c5fdb48743307baf32 (diff)
downloadop-kernel-dev-3711d86a2de17e967b576af8b8a1e9351a7d1466.zip
op-kernel-dev-3711d86a2de17e967b576af8b8a1e9351a7d1466.tar.gz
Merge tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux
Pull writeback fix from Wu Fengguang: "A trivial writeback fix" * tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: Do not sort b_io list only because of block device inode
Diffstat (limited to 'fs')
-rw-r--r--fs/block_dev.c2
-rw-r--r--fs/fs-writeback.c8
2 files changed, 6 insertions, 4 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index c3549ed..1e86823 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -592,7 +592,7 @@ static struct block_device *bd_acquire(struct inode *inode)
return bdev;
}
-static inline int sb_is_blkdev_sb(struct super_block *sb)
+int sb_is_blkdev_sb(struct super_block *sb)
{
return sb == blockdev_superblock;
}
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 30f6f27..9f4935b 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -69,7 +69,7 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
- if (strcmp(sb->s_type->name, "bdev") == 0)
+ if (sb_is_blkdev_sb(sb))
return inode->i_mapping->backing_dev_info;
return sb->s_bdi;
@@ -251,11 +251,13 @@ static int move_expired_inodes(struct list_head *delaying_queue,
if (work->older_than_this &&
inode_dirtied_after(inode, *work->older_than_this))
break;
+ list_move(&inode->i_wb_list, &tmp);
+ moved++;
+ if (sb_is_blkdev_sb(inode->i_sb))
+ continue;
if (sb && sb != inode->i_sb)
do_sb_sort = 1;
sb = inode->i_sb;
- list_move(&inode->i_wb_list, &tmp);
- moved++;
}
/* just one sb in list, splice to dispatch_queue and we're done */
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