From c8e15130e1636f68d5165aa2605b8e9cba0f644c Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 15 Jul 2013 00:09:37 -0400 Subject: ext4: simplify calculation of blocks to free on error In ext4_ext_map_blocks(), if we have successfully allocated the data blocks, but then run into trouble inserting the extent into the extent tree, most likely due to an ENOSPC condition, determine the arguments to ext4_free_blocks() in a simpler way which is easier to prove to be correct. Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index f57cc0e7f1b..593091537e7 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4261,8 +4261,8 @@ got_allocated_blocks: /* not a good idea to call discard here directly, * but otherwise we'd need to call it every free() */ ext4_discard_preallocations(inode); - ext4_free_blocks(handle, inode, NULL, ext4_ext_pblock(&newex), - ext4_ext_get_actual_len(&newex), fb_flags); + ext4_free_blocks(handle, inode, NULL, newblock, + EXT4_C2B(sbi, allocated_clusters), fb_flags); goto out2; } -- cgit v1.2.3-70-g09d2