Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'for-4.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"A fix of a corruption regarding fsync and clone, under some very
specific conditions explained in the patch.
The fix is marked for stable 3.16+ so I'd like to get it merged now
given the impact"
* tag 'for-4.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix file data corruption after cloning a range and fsync
+5
-2
+5
-2
fs/btrfs/extent_io.c
+5
-2
fs/btrfs/extent_io.c
···
4238
4238
struct extent_map *em;
4239
4239
u64 start = page_offset(page);
4240
4240
u64 end = start + PAGE_SIZE - 1;
4241
-
struct extent_io_tree *tree = &BTRFS_I(page->mapping->host)->io_tree;
4242
-
struct extent_map_tree *map = &BTRFS_I(page->mapping->host)->extent_tree;
4241
+
struct btrfs_inode *btrfs_inode = BTRFS_I(page->mapping->host);
4242
+
struct extent_io_tree *tree = &btrfs_inode->io_tree;
4243
+
struct extent_map_tree *map = &btrfs_inode->extent_tree;
4243
4244
4244
4245
if (gfpflags_allow_blocking(mask) &&
4245
4246
page->mapping->host->i_size > SZ_16M) {
···
4263
4262
extent_map_end(em) - 1,
4264
4263
EXTENT_LOCKED | EXTENT_WRITEBACK,
4265
4264
0, NULL)) {
4265
+
set_bit(BTRFS_INODE_NEEDS_FULL_SYNC,
4266
+
&btrfs_inode->runtime_flags);
4266
4267
remove_extent_mapping(map, em);
4267
4268
/* once for the rb tree */
4268
4269
free_extent_map(em);