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| author | Qu Wenruo <[email protected]> | 2023-08-29 07:14:25 +0000 |
|---|---|---|
| committer | David Sterba <[email protected]> | 2023-10-12 14:44:02 +0000 |
| commit | 1c94674b25cfb2c51b73ff156ca5e08e0f9f398e (patch) | |
| tree | f8682a88e89f483594b69cef980d38a0a213ffd8 /fs/btrfs/async-thread.c | |
| parent | btrfs: sipmlify uuid parameters of alloc_fs_devices() (diff) | |
| download | kernel-1c94674b25cfb2c51b73ff156ca5e08e0f9f398e.tar.gz kernel-1c94674b25cfb2c51b73ff156ca5e08e0f9f398e.zip | |
btrfs: do not require EXTENT_NOWAIT for btrfs_redirty_list_add()
The flag EXTENT_NOWAIT is a special flag to notify extent-io-tree code
that this operation should not sleep for the extent state preallocation.
However for btrfs_redirty_list_add(), all callers are able to sleep:
- clean_log_buffer()
Just 2 lines before, we call btrfs_pin_reserved_extent(), which calls
pin_down_extent(), and that function does not require EXTENT_NOWAIT.
Thus we're safe to call it without EXTENT_NOWAIT.
- btrfs_free_tree_block()
This function have several call sites which trigger tree read, e.g.
walk_up_proc(), thus we're safe to call it without EXTENT_NOWAIT.
Thus there is no need to require EXTENT_NOWAIT flag.
Signed-off-by: Qu Wenruo <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Diffstat (limited to 'fs/btrfs/async-thread.c')
0 files changed, 0 insertions, 0 deletions