forked from luck/tmp_suning_uos_patched
b40c2e665c
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>
27 lines
1.0 KiB
C
27 lines
1.0 KiB
C
/*
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* Copyright (C) Tino Reichardt, 2012
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _H_JFS_DISCARD
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#define _H_JFS_DISCARD
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struct fstrim_range;
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extern void jfs_issue_discard(struct inode *ip, u64 blkno, u64 nblocks);
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extern int jfs_ioc_trim(struct inode *ip, struct fstrim_range *range);
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#endif /* _H_JFS_DISCARD */
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