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| author | Filipe Manana <fdmanana@suse.com> | 2025-07-09 17:03:54 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2025-07-22 01:09:22 +0300 |
| commit | c6482cff95c77a3c1fc0120c6e8ef7b15f85439b (patch) | |
| tree | 114faaecb420bd4e98672d8ccec30b191d59c814 | |
| parent | 601ea9c42a58a46e1ec5d8ef1ab9fee5aef34b6d (diff) | |
| download | linux-c6482cff95c77a3c1fc0120c6e8ef7b15f85439b.tar.xz | |
btrfs: update function comment for btrfs_check_nocow_lock()
The documentation for the @nowait parameter is missing, so add it.
The @nowait parameter was added in commit 80f9d24130e4 ("btrfs: make
btrfs_check_nocow_lock nowait compatible"), which forgot to update the
function comment.
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/file.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 37bf473f2132..c2e83babdb8d 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -962,6 +962,7 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct folio *folio, * @pos: File offset. * @write_bytes: The length to write, will be updated to the nocow writeable * range. + * @nowait: Indicate if we can block or not (non-blocking IO context). * * This function will flush ordered extents in the range to ensure proper * nocow checks. @@ -970,7 +971,8 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct folio *folio, * > 0 If we can nocow, and updates @write_bytes. * 0 If we can't do a nocow write. * -EAGAIN If we can't do a nocow write because snapshoting of the inode's - * root is in progress. + * root is in progress or because we are in a non-blocking IO + * context and need to block (@nowait is true). * < 0 If an error happened. * * NOTE: Callers need to call btrfs_check_nocow_unlock() if we return > 0. |