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| author | Li Dongyang <lidongyang@novell.com> | 2011-03-24 10:24:27 +0000 |
|---|---|---|
| committer | root <Chris Mason chris.mason@oracle.com> | 2011-03-28 05:37:46 -0400 |
| commit | 5378e60734f5b7bfe1b43dc191aaf6131c1befe7 (patch) | |
| tree | b02c78e744a2a148b60a9c8046abef3f4381f544 /fs/btrfs/ctree.h | |
| parent | fce3bb9a1bd492793170e117c60d5718b7896af4 (diff) | |
| download | talos-obmc-linux-5378e60734f5b7bfe1b43dc191aaf6131c1befe7.tar.gz talos-obmc-linux-5378e60734f5b7bfe1b43dc191aaf6131c1befe7.zip | |
Btrfs: adjust btrfs_discard_extent() return errors and trimmed bytes
Callers of btrfs_discard_extent() should check if we are mounted with -o discard,
as we want to make fitrim to work even the fs is not mounted with -o discard.
Also we should use REQ_DISCARD to map the free extent to get a full mapping,
last we only return errors if
1. the error is not a EOPNOTSUPP
2. no device supports discard
Signed-off-by: Li Dongyang <lidongyang@novell.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 9e21176cdf57..a18b7bc2b22c 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2229,7 +2229,7 @@ u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); int btrfs_error_unpin_extent_range(struct btrfs_root *root, u64 start, u64 end); int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, - u64 num_bytes); + u64 num_bytes, u64 *actual_bytes); int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 type); |
