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Btrfs: fix extent boundary check in bio_readpage_error

Message ID 1385349727-982-1-git-send-email-fdmanana@gmail.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Filipe Manana Nov. 25, 2013, 3:22 a.m. UTC 
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
---
 fs/btrfs/extent_io.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index dfb528d..cb9ce69 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2166,7 +2166,7 @@  static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
 			return -EIO;
 		}
 
-		if (em->start > start || em->start + em->len < start) {
+		if (em->start > start || em->start + em->len <= start) {
 			free_extent_map(em);
 			em = NULL;
 		}