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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-31 01:48:25 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-31 01:48:25 (GMT) |
commit | 6a94cb73064c952255336cc57731904174b2c58f (patch) | |
tree | d19cc835db0a21e01909a92772868e1ad96f99ff /fs/xfs/quota/xfs_qm_syscalls.c | |
parent | f57fa1d6a6b3414e853d3d17e339ac48816e4406 (diff) | |
parent | 0a8c5395f90f06d128247844b2515c8bf3f2826b (diff) | |
download | linux-fsl-qoriq-6a94cb73064c952255336cc57731904174b2c58f.tar.xz |
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (184 commits)
[XFS] Fix race in xfs_write() between direct and buffered I/O with DMAPI
[XFS] handle unaligned data in xfs_bmbt_disk_get_all
[XFS] avoid memory allocations in xfs_fs_vcmn_err
[XFS] Fix speculative allocation beyond eof
[XFS] Remove XFS_BUF_SHUT() and friends
[XFS] Use the incore inode size in xfs_file_readdir()
[XFS] set b_error from bio error in xfs_buf_bio_end_io
[XFS] use inode_change_ok for setattr permission checking
[XFS] add a FMODE flag to make XFS invisible I/O less hacky
[XFS] resync headers with libxfs
[XFS] simplify projid check in xfs_rename
[XFS] replace b_fspriv with b_mount
[XFS] Remove unused tracing code
[XFS] Remove unnecessary assertion
[XFS] Remove unused variable in ktrace_free()
[XFS] Check return value of xfs_buf_get_noaddr()
[XFS] Fix hang after disallowed rename across directory quota domains
[XFS] Fix compile with CONFIG_COMPAT enabled
move inode tracing out of xfs_vnode.
move vn_iowait / vn_iowake into xfs_aops.c
...
Diffstat (limited to 'fs/xfs/quota/xfs_qm_syscalls.c')
-rw-r--r-- | fs/xfs/quota/xfs_qm_syscalls.c | 151 |
1 files changed, 77 insertions, 74 deletions
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c index 1a3b803..68139b3 100644 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ b/fs/xfs/quota/xfs_qm_syscalls.c @@ -127,7 +127,7 @@ xfs_qm_quotactl( break; case Q_XQUOTASYNC: - return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL)); + return xfs_sync_inodes(mp, SYNC_DELWRI); default: break; @@ -1022,101 +1022,104 @@ xfs_qm_export_flags( /* - * Go thru all the inodes in the file system, releasing their dquots. - * Note that the mount structure gets modified to indicate that quotas are off - * AFTER this, in the case of quotaoff. This also gets called from - * xfs_rootumount. + * Release all the dquots on the inodes in an AG. */ -void -xfs_qm_dqrele_all_inodes( - struct xfs_mount *mp, - uint flags) +STATIC void +xfs_qm_dqrele_inodes_ag( + xfs_mount_t *mp, + int ag, + uint flags) { - xfs_inode_t *ip, *topino; - uint ireclaims; - struct inode *vp; - boolean_t vnode_refd; + xfs_inode_t *ip = NULL; + xfs_perag_t *pag = &mp->m_perag[ag]; + int first_index = 0; + int nr_found; - ASSERT(mp->m_quotainfo); - - XFS_MOUNT_ILOCK(mp); -again: - ip = mp->m_inodes; - if (ip == NULL) { - XFS_MOUNT_IUNLOCK(mp); - return; - } do { - /* Skip markers inserted by xfs_sync */ - if (ip->i_mount == NULL) { - ip = ip->i_mnext; - continue; + /* + * use a gang lookup to find the next inode in the tree + * as the tree is sparse and a gang lookup walks to find + * the number of objects requested. + */ + read_lock(&pag->pag_ici_lock); + nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, + (void**)&ip, first_index, 1); + + if (!nr_found) { + read_unlock(&pag->pag_ici_lock); + break; } - /* Root inode, rbmip and rsumip have associated blocks */ + + /* + * Update the index for the next lookup. Catch overflows + * into the next AG range which can occur if we have inodes + * in the last block of the AG and we are currently + * pointing to the last inode. + */ + first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); + if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) { + read_unlock(&pag->pag_ici_lock); + break; + } + + /* skip quota inodes */ if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) { ASSERT(ip->i_udquot == NULL); ASSERT(ip->i_gdquot == NULL); - ip = ip->i_mnext; + read_unlock(&pag->pag_ici_lock); continue; } - vp = VFS_I(ip); - if (!vp) { - ASSERT(ip->i_udquot == NULL); - ASSERT(ip->i_gdquot == NULL); - ip = ip->i_mnext; + + /* + * If we can't get a reference on the inode, it must be + * in reclaim. Leave it for the reclaim code to flush. + */ + if (!igrab(VFS_I(ip))) { + read_unlock(&pag->pag_ici_lock); continue; } - vnode_refd = B_FALSE; - if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) { - ireclaims = mp->m_ireclaims; - topino = mp->m_inodes; - vp = vn_grab(vp); - if (!vp) - goto again; - - XFS_MOUNT_IUNLOCK(mp); - /* XXX restart limit ? */ - xfs_ilock(ip, XFS_ILOCK_EXCL); - vnode_refd = B_TRUE; - } else { - ireclaims = mp->m_ireclaims; - topino = mp->m_inodes; - XFS_MOUNT_IUNLOCK(mp); + read_unlock(&pag->pag_ici_lock); + + /* avoid new inodes though we shouldn't find any here */ + if (xfs_iflags_test(ip, XFS_INEW)) { + IRELE(ip); + continue; } - /* - * We don't keep the mountlock across the dqrele() call, - * since it can take a while.. - */ + xfs_ilock(ip, XFS_ILOCK_EXCL); if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) { xfs_qm_dqrele(ip->i_udquot); ip->i_udquot = NULL; } - if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) { + if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && + ip->i_gdquot) { xfs_qm_dqrele(ip->i_gdquot); ip->i_gdquot = NULL; } - xfs_iunlock(ip, XFS_ILOCK_EXCL); - /* - * Wait until we've dropped the ilock and mountlock to - * do the vn_rele. Or be condemned to an eternity in the - * inactive code in hell. - */ - if (vnode_refd) - IRELE(ip); - XFS_MOUNT_ILOCK(mp); - /* - * If an inode was inserted or removed, we gotta - * start over again. - */ - if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) { - /* XXX use a sentinel */ - goto again; - } - ip = ip->i_mnext; - } while (ip != mp->m_inodes); + xfs_iput(ip, XFS_ILOCK_EXCL); + + } while (nr_found); +} + +/* + * Go thru all the inodes in the file system, releasing their dquots. + * Note that the mount structure gets modified to indicate that quotas are off + * AFTER this, in the case of quotaoff. This also gets called from + * xfs_rootumount. + */ +void +xfs_qm_dqrele_all_inodes( + struct xfs_mount *mp, + uint flags) +{ + int i; - XFS_MOUNT_IUNLOCK(mp); + ASSERT(mp->m_quotainfo); + for (i = 0; i < mp->m_sb.sb_agcount; i++) { + if (!mp->m_perag[i].pag_ici_init) + continue; + xfs_qm_dqrele_inodes_ag(mp, i, flags); + } } /*------------------------------------------------------------------------*/ |