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    Subject[PATCH 7/12] ext4 balloc: reset windowsz when full
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    Date

    ------------------------------------------------------
    Subject: ext2 balloc: reset windowsz when full
    From: Hugh Dickins <hugh@veritas.com>

    ext2_new_blocks should reset the reservation window size to 0 when squeezing
    the last blocks out of an almost full filesystem, so the retry doesn't skip
    any groups with less than half that free, reporting ENOSPC too soon.

    ------------------------------------------------------
    Sync up reservation fix from ext2 in ext4

    Signed-off-by: Mingming Cao <cmm@us.ibm.com>
    ---


    ---

    linux-2.6.19-rc5-cmm/fs/ext4/balloc.c | 1 +
    1 file changed, 1 insertion(+)

    diff -puN fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs fs/ext4/balloc.c
    --- linux-2.6.19-rc5/fs/ext4/balloc.c~ext4_reset_windowsz_in_full_fs 2006-11-28 19:37:01.000000000 -0800
    +++ linux-2.6.19-rc5-cmm/fs/ext4/balloc.c 2006-11-28 19:37:01.000000000 -0800
    @@ -1566,6 +1566,7 @@ retry_alloc:
    */
    if (my_rsv) {
    my_rsv = NULL;
    + windowsz = 0;
    group_no = goal_group;
    goto retry_alloc;
    }
    _


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