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authorChristoph Hellwig <hch@infradead.org>2010-07-20 11:51:31 +0400
committerAlex Elder <aelder@sgi.com>2010-07-26 22:16:52 +0400
commit5d18898b20dfed5f373f8a9a7cbe01446036f8e9 (patch)
treedc96915d62c7140ad4ac33a3724ddf36f9db022f /fs/xfs/quota
parent939d723b721eef71060201738653a73443ff4510 (diff)
downloadlinux-5d18898b20dfed5f373f8a9a7cbe01446036f8e9.tar.xz
xfs: simplify xfs_truncate_file
xfs_truncate_file is only used for truncating quota files. Move it to xfs_qm_syscalls.c so it can be marked static and take advatange of the fact by removing the unused page cache validation and taking the iget into the helper. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/quota')
-rw-r--r--fs/xfs/quota/xfs_qm_syscalls.c70
1 files changed, 52 insertions, 18 deletions
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 73f2b203975e..d257eb8557c4 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -238,40 +238,74 @@ out_unlock:
return error;
}
+STATIC int
+xfs_qm_scall_trunc_qfile(
+ struct xfs_mount *mp,
+ xfs_ino_t ino)
+{
+ struct xfs_inode *ip;
+ struct xfs_trans *tp;
+ int error;
+
+ if (ino == NULLFSINO)
+ return 0;
+
+ error = xfs_iget(mp, NULL, ino, 0, 0, &ip);
+ if (error)
+ return error;
+
+ xfs_ilock(ip, XFS_IOLOCK_EXCL);
+
+ tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
+ error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
+ XFS_TRANS_PERM_LOG_RES,
+ XFS_ITRUNCATE_LOG_COUNT);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ goto out_put;
+ }
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, ip);
+
+ error = xfs_itruncate_finish(&tp, ip, 0, XFS_DATA_FORK, 1);
+ if (error) {
+ xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES |
+ XFS_TRANS_ABORT);
+ goto out_unlock;
+ }
+
+ xfs_ichgtime(ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+ error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+
+out_unlock:
+ xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+out_put:
+ IRELE(ip);
+ return error;
+}
+
int
xfs_qm_scall_trunc_qfiles(
xfs_mount_t *mp,
uint flags)
{
int error = 0, error2 = 0;
- xfs_inode_t *qip;
if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) {
qdprintk("qtrunc flags=%x m_qflags=%x\n", flags, mp->m_qflags);
return XFS_ERROR(EINVAL);
}
- if ((flags & XFS_DQ_USER) && mp->m_sb.sb_uquotino != NULLFSINO) {
- error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, 0, 0, &qip);
- if (!error) {
- error = xfs_truncate_file(mp, qip);
- IRELE(qip);
- }
- }
-
- if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
- mp->m_sb.sb_gquotino != NULLFSINO) {
- error2 = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip);
- if (!error2) {
- error2 = xfs_truncate_file(mp, qip);
- IRELE(qip);
- }
- }
+ if (flags & XFS_DQ_USER)
+ error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino);
+ if (flags & (XFS_DQ_GROUP|XFS_DQ_PROJ))
+ error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino);
return error ? error : error2;
}
-
/*
* Switch on (a given) quota enforcement for a filesystem. This takes
* effect immediately.