diff options
| author | Tino Reichardt <milky-kernel@mcmilk.de> | 2012-09-17 11:58:19 -0500 |
|---|---|---|
| committer | Dave Kleikamp <dave.kleikamp@oracle.com> | 2012-09-17 11:58:19 -0500 |
| commit | b40c2e665cd552eae5fbdbb878bc29a34357668e (patch) | |
| tree | 23714e5773a77abf1daf71ca7958dcd8dfa688ea /fs/jfs/jfs_filsys.h | |
| parent | fbcbe2b3c92ee1c930dcfcf8bb764074c100fd63 (diff) | |
fs/jfs: TRIM support for JFS Filesystem
This patch adds support for the two linux interfaces of the discard/TRIM
command for SSD devices and sparse/thinly-provisioned LUNs.
JFS will support batched discard via FITRIM ioctl and online discard
with the discard mount option.
Signed-off-by: Tino Reichardt <list-jfs@mcmilk.de>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Diffstat (limited to 'fs/jfs/jfs_filsys.h')
| -rw-r--r-- | fs/jfs/jfs_filsys.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/jfs/jfs_filsys.h b/fs/jfs/jfs_filsys.h index b3f5463fbe5..b67d64671bb 100644 --- a/fs/jfs/jfs_filsys.h +++ b/fs/jfs/jfs_filsys.h @@ -45,6 +45,9 @@ /* mount time flag to disable journaling to disk */ #define JFS_NOINTEGRITY 0x00000040 +/* mount time flag to enable TRIM to ssd disks */ +#define JFS_DISCARD 0x00000080 + /* commit option */ #define JFS_COMMIT 0x00000f00 /* commit option mask */ #define JFS_GROUPCOMMIT 0x00000100 /* group (of 1) commit */ |