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xfs: add inode id filtering to eofblocks scan

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Support inode ID filtering in the eofblocks scan. The caller must
set the associated XFS_EOF_FLAGS_*ID bit and ID field.

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>
This commit is contained in:
Brian Foster 2012-11-07 12:21:13 -05:00 committed by Ben Myers
parent 8ca149de80
commit 3e3f9f5863
3 changed files with 36 additions and 3 deletions
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14
fs/xfs/xfs_fs.h
View File

@ -346,13 +346,23 @@ typedef struct xfs_error_injection {
struct xfs_eofblocks {
__u32 eof_version;
__u32 eof_flags;
__u64 pad[15];
uid_t eof_uid;
gid_t eof_gid;
prid_t eof_prid;
__u32 pad32;
__u64 pad64[13];
};
/* eof_flags values */
#define XFS_EOF_FLAGS_SYNC (1 << 0) /* sync/wait mode scan */
#define XFS_EOF_FLAGS_UID (1 << 1) /* filter by uid */
#define XFS_EOF_FLAGS_GID (1 << 2) /* filter by gid */
#define XFS_EOF_FLAGS_PRID (1 << 3) /* filter by project id */
#define XFS_EOF_FLAGS_VALID \
(XFS_EOF_FLAGS_SYNC)
(XFS_EOF_FLAGS_SYNC | \
XFS_EOF_FLAGS_UID | \
XFS_EOF_FLAGS_GID | \
XFS_EOF_FLAGS_PRID)
/*

22
fs/xfs/xfs_icache.c
View File

@ -1170,6 +1170,21 @@ xfs_reclaim_inodes_count(
return reclaimable;
}
STATIC int
xfs_inode_match_id(
struct xfs_inode *ip,
struct xfs_eofblocks *eofb)
{
if (eofb->eof_flags & XFS_EOF_FLAGS_UID)
return ip->i_d.di_uid == eofb->eof_uid;
else if (eofb->eof_flags & XFS_EOF_FLAGS_GID)
return ip->i_d.di_gid == eofb->eof_gid;
else if (eofb->eof_flags & XFS_EOF_FLAGS_PRID)
return xfs_get_projid(ip) == eofb->eof_prid;
return 0;
}
STATIC int
xfs_inode_free_eofblocks(
struct xfs_inode *ip,
@ -1178,6 +1193,7 @@ xfs_inode_free_eofblocks(
void *args)
{
int ret;
struct xfs_eofblocks *eofb = args;
if (!xfs_can_free_eofblocks(ip, false)) {
/* inode could be preallocated or append-only */
@ -1194,6 +1210,12 @@ xfs_inode_free_eofblocks(
mapping_tagged(VFS_I(ip)->i_mapping, PAGECACHE_TAG_DIRTY))
return 0;
if (eofb &&
(eofb->eof_flags & (XFS_EOF_FLAGS_UID|XFS_EOF_FLAGS_GID|
XFS_EOF_FLAGS_PRID)) &&
!xfs_inode_match_id(ip, eofb))
return 0;
ret = xfs_free_eofblocks(ip->i_mount, ip, true);
/* don't revisit the inode if we're not waiting */

3
fs/xfs/xfs_ioctl.c
View File

@ -1615,7 +1615,8 @@ xfs_file_ioctl(
if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID)
return -XFS_ERROR(EINVAL);
if (memchr_inv(eofb.pad, 0, sizeof(eofb.pad)))
if (memchr_inv(&eofb.pad32, 0, sizeof(eofb.pad32)) ||
memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64)))
return -XFS_ERROR(EINVAL);
error = xfs_icache_free_eofblocks(mp, &eofb);