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Date: Wed, 06 Dec 2006 20:39:20 -0800 From: akpm@...l.org To: torvalds@...l.org Cc: akpm@...l.org, hugh@...itas.com, cmm@...ibm.com, linux-ext4@...r.kernel.org Subject: [patch 275/354] ext4 balloc: fix off-by-one against rsv_end From: Hugh Dickins <hugh@...itas.com> rsv_end is the last block within the reservation, so alloc_new_reservation should accept start_block == rsv_end as success. Signed-off-by: Mingming Cao <cmm@...ibm.com> Signed-off-by: Hugh Dickins <hugh@...itas.com> Cc: <linux-ext4@...r.kernel.org> Signed-off-by: Andrew Morton <akpm@...l.org> --- fs/ext4/balloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN fs/ext4/balloc.c~ext4-balloc-fix-off-by-one-against-rsv_end fs/ext4/balloc.c --- a/fs/ext4/balloc.c~ext4-balloc-fix-off-by-one-against-rsv_end +++ a/fs/ext4/balloc.c @@ -1165,7 +1165,7 @@ retry: * check if the first free block is within the * free space we just reserved */ - if (start_block >= my_rsv->rsv_start && start_block < my_rsv->rsv_end) + if (start_block >= my_rsv->rsv_start && start_block <= my_rsv->rsv_end) return 0; /* success */ /* * if the first free bit we found is out of the reservable space _ - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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