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    Subject[PATCH] [17/106] UBIFS: do not read flash unnecessarily
    Date
    2.6.35-longterm review patch.  If anyone has any objections, please let me know.

    ------------------
    From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

    commit 8b229c76765816796eec7ccd428f03bd8de8b525 upstream.

    This fix makes the 'dbg_check_old_index()' function return
    immediately if debugging is disabled, instead of executing
    incorrect 'goto out' which causes UBIFS to:

    1. Allocate memory
    2. Read the flash

    On every commit. OK, we do not commit that often, but it is
    still silly to do unneeded I/O anyway.

    Credits to coverity for spotting this silly issue.

    Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>

    ---
    fs/ubifs/commit.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    Index: linux-2.6.35.y/fs/ubifs/commit.c
    ===================================================================
    --- linux-2.6.35.y.orig/fs/ubifs/commit.c
    +++ linux-2.6.35.y/fs/ubifs/commit.c
    @@ -519,7 +519,7 @@ int dbg_check_old_index(struct ubifs_inf
    size_t sz;

    if (!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX))
    - goto out;
    + return 0;

    INIT_LIST_HEAD(&list);


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