diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2022-09-12 12:27:43 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-09-29 17:08:26 +0200 |
| commit | 26ce91144631a402ff82c93358d8880326a7caa3 (patch) | |
| tree | dbd450729f59e3b1e947dd2e4ba8a69ed175c1f6 /fs/btrfs/inode.c | |
| parent | 857bc13f857aea957ae038b2b43c28560976024a (diff) | |
btrfs: make can_nocow_extent nowait compatible
If we have NOWAIT specified on our IOCB and we're writing into a
PREALLOC or NOCOW extent then we need to be able to tell
can_nocow_extent that we don't want to wait on any locks or metadata IO.
Fix can_nocow_extent to allow for NOWAIT.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 30b6c1eaa89f..92ea0f9e6a06 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1666,7 +1666,7 @@ static noinline int run_delalloc_zoned(struct btrfs_inode *inode, } static noinline int csum_exist_in_range(struct btrfs_fs_info *fs_info, - u64 bytenr, u64 num_bytes) + u64 bytenr, u64 num_bytes, bool nowait) { struct btrfs_root *csum_root = btrfs_csum_root(fs_info, bytenr); struct btrfs_ordered_sum *sums; @@ -1674,7 +1674,8 @@ static noinline int csum_exist_in_range(struct btrfs_fs_info *fs_info, LIST_HEAD(list); ret = btrfs_lookup_csums_range(csum_root, bytenr, - bytenr + num_bytes - 1, &list, 0); + bytenr + num_bytes - 1, &list, 0, + nowait); if (ret == 0 && list_empty(&list)) return 0; @@ -1800,6 +1801,7 @@ static int can_nocow_file_extent(struct btrfs_path *path, u8 extent_type; int can_nocow = 0; int ret = 0; + bool nowait = path->nowait; fi = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_file_extent_item); extent_type = btrfs_file_extent_type(leaf, fi); @@ -1876,7 +1878,8 @@ static int can_nocow_file_extent(struct btrfs_path *path, * Force COW if csums exist in the range. This ensures that csums for a * given extent are either valid or do not exist. */ - ret = csum_exist_in_range(root->fs_info, args->disk_bytenr, args->num_bytes); + ret = csum_exist_in_range(root->fs_info, args->disk_bytenr, args->num_bytes, + nowait); WARN_ON_ONCE(ret > 0 && is_freespace_inode); if (ret != 0) goto out; @@ -7167,7 +7170,7 @@ static bool btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr) */ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, u64 *orig_start, u64 *orig_block_len, - u64 *ram_bytes, bool strict) + u64 *ram_bytes, bool nowait, bool strict) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct can_nocow_file_extent_args nocow_args = { 0 }; @@ -7183,6 +7186,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, path = btrfs_alloc_path(); if (!path) return -ENOMEM; + path->nowait = nowait; ret = btrfs_lookup_file_extent(NULL, root, path, btrfs_ino(BTRFS_I(inode)), offset, 0); @@ -7452,7 +7456,7 @@ 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, false) == 1) { + &orig_block_len, &ram_bytes, false, false) == 1) { bg = btrfs_inc_nocow_writers(fs_info, block_start); if (bg) can_nocow = true; @@ -11135,7 +11139,7 @@ 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, true); + ret = can_nocow_extent(inode, start, &len, NULL, NULL, NULL, false, true); if (ret < 0) { goto out; } else if (ret) { |