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xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl
The XFS_IOC_FREE_EOFBLOCKS ioctl allows users to invoke an EOFBLOCKS scan. The xfs_eofblocks structure is defined to support the command parameters (scan mode). Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
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41176a68e3
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8ca149de80
4 changed files with 45 additions and 4 deletions
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@ -339,6 +339,22 @@ typedef struct xfs_error_injection {
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} xfs_error_injection_t;
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} xfs_error_injection_t;
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/*
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* Speculative preallocation trimming.
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*/
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#define XFS_EOFBLOCKS_VERSION 1
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struct xfs_eofblocks {
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__u32 eof_version;
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__u32 eof_flags;
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__u64 pad[15];
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};
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/* eof_flags values */
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#define XFS_EOF_FLAGS_SYNC (1 << 0) /* sync/wait mode scan */
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#define XFS_EOF_FLAGS_VALID \
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(XFS_EOF_FLAGS_SYNC)
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/*
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/*
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* The user-level Handle Request interface structure.
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* The user-level Handle Request interface structure.
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*/
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*/
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@ -457,6 +473,7 @@ typedef struct xfs_handle {
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/* XFS_IOC_GETBIOSIZE ---- deprecated 47 */
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/* XFS_IOC_GETBIOSIZE ---- deprecated 47 */
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#define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap)
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#define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap)
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#define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64)
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#define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64)
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#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_eofblocks)
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/*
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/*
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* ioctl commands that replace IRIX syssgi()'s
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* ioctl commands that replace IRIX syssgi()'s
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@ -1206,11 +1206,15 @@ xfs_inode_free_eofblocks(
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int
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int
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xfs_icache_free_eofblocks(
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xfs_icache_free_eofblocks(
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struct xfs_mount *mp,
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struct xfs_mount *mp,
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int flags)
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struct xfs_eofblocks *eofb)
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{
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{
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ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0);
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int flags = SYNC_TRYLOCK;
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if (eofb && (eofb->eof_flags & XFS_EOF_FLAGS_SYNC))
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flags = SYNC_WAIT;
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return xfs_inode_ag_iterator_tag(mp, xfs_inode_free_eofblocks, flags,
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return xfs_inode_ag_iterator_tag(mp, xfs_inode_free_eofblocks, flags,
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NULL, XFS_ICI_EOFBLOCKS_TAG);
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eofb, XFS_ICI_EOFBLOCKS_TAG);
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}
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}
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void
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void
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@ -37,7 +37,7 @@ void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
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void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
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void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
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void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
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void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
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int xfs_icache_free_eofblocks(struct xfs_mount *, int);
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int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
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int xfs_sync_inode_grab(struct xfs_inode *ip);
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int xfs_sync_inode_grab(struct xfs_inode *ip);
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int xfs_inode_ag_iterator(struct xfs_mount *mp,
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int xfs_inode_ag_iterator(struct xfs_mount *mp,
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@ -42,6 +42,7 @@
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#include "xfs_inode_item.h"
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#include "xfs_inode_item.h"
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#include "xfs_export.h"
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#include "xfs_export.h"
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#include "xfs_trace.h"
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#include "xfs_trace.h"
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#include "xfs_icache.h"
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#include <linux/capability.h>
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#include <linux/capability.h>
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#include <linux/dcache.h>
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#include <linux/dcache.h>
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@ -1602,6 +1603,25 @@ xfs_file_ioctl(
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error = xfs_errortag_clearall(mp, 1);
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error = xfs_errortag_clearall(mp, 1);
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return -error;
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return -error;
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case XFS_IOC_FREE_EOFBLOCKS: {
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struct xfs_eofblocks eofb;
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if (copy_from_user(&eofb, arg, sizeof(eofb)))
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return -XFS_ERROR(EFAULT);
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if (eofb.eof_version != XFS_EOFBLOCKS_VERSION)
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return -XFS_ERROR(EINVAL);
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if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID)
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return -XFS_ERROR(EINVAL);
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if (memchr_inv(eofb.pad, 0, sizeof(eofb.pad)))
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return -XFS_ERROR(EINVAL);
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error = xfs_icache_free_eofblocks(mp, &eofb);
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return -error;
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}
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default:
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default:
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return -ENOTTY;
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return -ENOTTY;
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}
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}
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