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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/ioctl.c | |
| parent | Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP (diff) | |
| download | linux-dev-5378e60734f5b7bfe1b43dc191aaf6131c1befe7.tar.xz linux-dev-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/ioctl.c')
0 files changed, 0 insertions, 0 deletions