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    Subject[RFC PATCH 10/11] ext2: have sync_fs op report writeback errors when passed a since pointer
    Date
    From: Jeff Layton <jlayton@redhat.com>

    Signed-off-by: Jeff Layton <jlayton@redhat.com>
    ---
    fs/ext2/super.c | 9 ++++++++-
    1 file changed, 8 insertions(+), 1 deletion(-)

    diff --git a/fs/ext2/super.c b/fs/ext2/super.c
    index 0700f3264c7e..51b548cfebb1 100644
    --- a/fs/ext2/super.c
    +++ b/fs/ext2/super.c
    @@ -1264,6 +1264,7 @@ void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
    */
    static int ext2_sync_fs(struct super_block *sb, int wait, errseq_t *since)
    {
    + int ret;
    struct ext2_sb_info *sbi = EXT2_SB(sb);
    struct ext2_super_block *es = EXT2_SB(sb)->s_es;

    @@ -1280,7 +1281,13 @@ static int ext2_sync_fs(struct super_block *sb, int wait, errseq_t *since)
    }
    spin_unlock(&sbi->s_lock);
    ext2_sync_super(sb, es, wait);
    - return __sync_blockdev(sb->s_bdev, wait);
    + ret = __sync_blockdev(sb->s_bdev, wait);
    + if (since) {
    + int ret2 = errseq_check_and_advance(&sb->s_wb_err, since);
    + if (ret == 0)
    + ret = ret2;
    + }
    + return ret;
    }

    static int ext2_freeze(struct super_block *sb)
    --
    2.17.0
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