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Merge tag 'for-5.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

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Pull btrfs fixes from David Sterba:

 - fix swapfile activation on subvolumes with deleted snapshots

 - error value mixup when removing directory entries from tree log

 - fix lzo compression level reset after previous level setting

 - fix space cache memory leak after transaction abort

 - fix const function attribute

 - more error handling improvements

* tag 'for-5.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: detect nocow for swap after snapshot delete
  btrfs: check the right error variable in btrfs_del_dir_entries_in_log
  btrfs: fix space cache memory leak after transaction abort
  btrfs: use the correct const function attribute for btrfs_get_num_csums
  btrfs: reset compression level for lzo on remount
  btrfs: handle errors from async submission
This commit is contained in:
Linus Torvalds
2020-08-24 12:01:20 -07:00
parent c41c3ec4a2 a84d5d429f
commit 9907ab3714
9 changed files with 39 additions and 31 deletions
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29
fs/btrfs/inode.c
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@@ -1610,7 +1610,7 @@ next_slot:
goto out_check;
ret = btrfs_cross_ref_exist(root, ino,
found_key.offset -
extent_offset, disk_bytenr);
extent_offset, disk_bytenr, false);
if (ret) {
/*
* ret could be -EIO if the above fails to read
@@ -2161,11 +2161,8 @@ static blk_status_t btrfs_submit_bio_start(void *private_data, struct bio *bio,
u64 bio_offset)
{
struct inode *inode = private_data;
blk_status_t ret = 0;
ret = btrfs_csum_one_bio(BTRFS_I(inode), bio, 0, 0);
BUG_ON(ret); /* -ENOMEM */
return 0;
return btrfs_csum_one_bio(BTRFS_I(inode), bio, 0, 0);
}
/*
@@ -6953,6 +6950,8 @@ static struct extent_map *btrfs_new_extent_direct(struct btrfs_inode *inode,
* @orig_start: (optional) Return the original file offset of the file extent
* @orig_len: (optional) Return the original on-disk length of the file extent
* @ram_bytes: (optional) Return the ram_bytes of the file extent
* @strict: if true, omit optimizations that might force us into unnecessary
* cow. e.g., don't trust generation number.
*
* This function will flush ordered extents in the range to ensure proper
* nocow checks for (nowait == false) case.
@@ -6967,7 +6966,7 @@ static struct extent_map *btrfs_new_extent_direct(struct btrfs_inode *inode,
*/
noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
u64 *orig_start, u64 *orig_block_len,
u64 *ram_bytes)
u64 *ram_bytes, bool strict)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_path *path;
@@ -7045,8 +7044,9 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
* Do the same check as in btrfs_cross_ref_exist but without the
* unnecessary search.
*/
if (btrfs_file_extent_generation(leaf, fi) <=
btrfs_root_last_snapshot(&root->root_item))
if (!strict &&
(btrfs_file_extent_generation(leaf, fi) <=
btrfs_root_last_snapshot(&root->root_item)))
goto out;
backref_offset = btrfs_file_extent_offset(leaf, fi);
@@ -7082,7 +7082,8 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
*/
ret = btrfs_cross_ref_exist(root, btrfs_ino(BTRFS_I(inode)),
key.offset - backref_offset, disk_bytenr);
key.offset - backref_offset, disk_bytenr,
strict);
if (ret) {
ret = 0;
goto out;
@@ -7303,7 +7304,7 @@ static int btrfs_get_blocks_direct_write(struct extent_map **map,
block_start = em->block_start + (start - em->start);
if (can_nocow_extent(inode, start, &len, &orig_start,
&orig_block_len, &ram_bytes) == 1 &&
&orig_block_len, &ram_bytes, false) == 1 &&
btrfs_inc_nocow_writers(fs_info, block_start)) {
struct extent_map *em2;
@@ -7619,10 +7620,8 @@ static blk_status_t btrfs_submit_bio_start_direct_io(void *private_data,
struct bio *bio, u64 offset)
{
struct inode *inode = private_data;
blk_status_t ret;
ret = btrfs_csum_one_bio(BTRFS_I(inode), bio, offset, 1);
BUG_ON(ret); /* -ENOMEM */
return 0;
return btrfs_csum_one_bio(BTRFS_I(inode), bio, offset, 1);
}
static void btrfs_end_dio_bio(struct bio *bio)
@@ -10136,7 +10135,7 @@ static int btrfs_swap_activate(struct swap_info_struct *sis, struct file *file,
free_extent_map(em);
em = NULL;
ret = can_nocow_extent(inode, start, &len, NULL, NULL, NULL);
ret = can_nocow_extent(inode, start, &len, NULL, NULL, NULL, true);
if (ret < 0) {
goto out;
} else if (ret) {