diff options
Diffstat (limited to 'fs/btrfs/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index b8a7637e14a..1a0510ad030 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -364,6 +364,7 @@ int noinline btrfs_drop_extents(struct btrfs_trans_handle *trans, u64 start, u64 end, u64 inline_limit, u64 *hint_byte) { u64 extent_end = 0; + u64 locked_end = end; u64 search_start = start; u64 leaf_start; u64 ram_bytes = 0; @@ -479,12 +480,6 @@ next_slot: goto next_slot; } - if (found_inline) { - u64 mask = root->sectorsize - 1; - search_start = (extent_end + mask) & ~mask; - } else - search_start = extent_end; - if (end <= extent_end && start >= key.offset && found_inline) *hint_byte = EXTENT_MAP_INLINE; @@ -501,6 +496,26 @@ next_slot: if (found_inline && start <= key.offset) keep = 1; } + + if (bookend && found_extent && locked_end < extent_end) { + ret = try_lock_extent(&BTRFS_I(inode)->io_tree, + locked_end, extent_end - 1, GFP_NOFS); + if (!ret) { + btrfs_release_path(root, path); + lock_extent(&BTRFS_I(inode)->io_tree, + locked_end, extent_end - 1, GFP_NOFS); + locked_end = extent_end; + continue; + } + locked_end = extent_end; + } + + if (found_inline) { + u64 mask = root->sectorsize - 1; + search_start = (extent_end + mask) & ~mask; + } else + search_start = extent_end; + /* truncate existing extent */ if (start > key.offset) { u64 new_num; @@ -638,6 +653,10 @@ next_slot: } out: btrfs_free_path(path); + if (locked_end > end) { + unlock_extent(&BTRFS_I(inode)->io_tree, end, locked_end - 1, + GFP_NOFS); + } btrfs_check_file(root, inode); return ret; } |