Btrfs: Add a per-inode csum mutex to avoid races creating csum items
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index ece221c..8037792 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -267,13 +267,13 @@
/* FIXME...EIEIO, ENOSPC and more */
/* insert any holes we need to create */
- if (isize < end_pos) {
+ if (isize < start_pos) {
u64 last_pos_in_file;
u64 hole_size;
u64 mask = root->sectorsize - 1;
last_pos_in_file = (isize + mask) & ~mask;
- hole_size = (end_pos - last_pos_in_file + mask) & ~mask;
- if (last_pos_in_file < end_pos) {
+ hole_size = (start_pos - last_pos_in_file + mask) & ~mask;
+ if (last_pos_in_file < start_pos) {
err = btrfs_drop_extents(trans, root, inode,
last_pos_in_file,
last_pos_in_file + hole_size,