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| 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_dmap.h | |
| parent | fbcbe2b3c92ee1c930dcfcf8bb764074c100fd63 (diff) | |
| download | linux-b40c2e665cd552eae5fbdbb878bc29a34357668e.tar.bz2 | |
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_dmap.h')
| -rw-r--r-- | fs/jfs/jfs_dmap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/jfs/jfs_dmap.h b/fs/jfs/jfs_dmap.h index 6dcb906c55d8..562b9a7e4311 100644 --- a/fs/jfs/jfs_dmap.h +++ b/fs/jfs/jfs_dmap.h @@ -311,4 +311,6 @@ extern int dbAllocBottomUp(struct inode *ip, s64 blkno, s64 nblocks); extern int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks); extern void dbFinalizeBmap(struct inode *ipbmap); extern s64 dbMapFileSizeToMapSize(struct inode *ipbmap); +extern s64 dbDiscardAG(struct inode *ip, int agno, s64 minlen); + #endif /* _H_JFS_DMAP */ |