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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_discard.h | |
| parent | fbcbe2b3c92ee1c930dcfcf8bb764074c100fd63 (diff) | |
| download | blackbird-op-linux-b40c2e665cd552eae5fbdbb878bc29a34357668e.tar.gz blackbird-op-linux-b40c2e665cd552eae5fbdbb878bc29a34357668e.zip | |
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_discard.h')
| -rw-r--r-- | fs/jfs/jfs_discard.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/jfs/jfs_discard.h b/fs/jfs/jfs_discard.h new file mode 100644 index 000000000000..40d1ee6081a0 --- /dev/null +++ b/fs/jfs/jfs_discard.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) Tino Reichardt, 2012 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef _H_JFS_DISCARD +#define _H_JFS_DISCARD + +struct fstrim_range; + +extern void jfs_issue_discard(struct inode *ip, u64 blkno, u64 nblocks); +extern int jfs_ioc_trim(struct inode *ip, struct fstrim_range *range); + +#endif /* _H_JFS_DISCARD */ |
