diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/xfs/xfs_trans_inode.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/xfs/xfs_trans_inode.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/fs/xfs/xfs_trans_inode.c b/ANDROID_3.4.5/fs/xfs/xfs_trans_inode.c new file mode 100644 index 00000000..7a7442c0 --- /dev/null +++ b/ANDROID_3.4.5/fs/xfs/xfs_trans_inode.c @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2000,2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_types.h" +#include "xfs_bit.h" +#include "xfs_log.h" +#include "xfs_inum.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_bmap_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_dinode.h" +#include "xfs_inode.h" +#include "xfs_btree.h" +#include "xfs_trans_priv.h" +#include "xfs_inode_item.h" +#include "xfs_trace.h" + +#ifdef XFS_TRANS_DEBUG +STATIC void +xfs_trans_inode_broot_debug( + xfs_inode_t *ip); +#else +#define xfs_trans_inode_broot_debug(ip) +#endif + +/* + * Add a locked inode to the transaction. + * + * The inode must be locked, and it cannot be associated with any transaction. + * If lock_flags is non-zero the inode will be unlocked on transaction commit. + */ +void +xfs_trans_ijoin( + struct xfs_trans *tp, + struct xfs_inode *ip, + uint lock_flags) +{ + xfs_inode_log_item_t *iip; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + if (ip->i_itemp == NULL) + xfs_inode_item_init(ip, ip->i_mount); + iip = ip->i_itemp; + + ASSERT(iip->ili_lock_flags == 0); + iip->ili_lock_flags = lock_flags; + + /* + * Get a log_item_desc to point at the new item. + */ + xfs_trans_add_item(tp, &iip->ili_item); + + xfs_trans_inode_broot_debug(ip); +} + +/* + * Transactional inode timestamp update. Requires the inode to be locked and + * joined to the transaction supplied. Relies on the transaction subsystem to + * track dirty state and update/writeback the inode accordingly. + */ +void +xfs_trans_ichgtime( + struct xfs_trans *tp, + struct xfs_inode *ip, + int flags) +{ + struct inode *inode = VFS_I(ip); + timespec_t tv; + + ASSERT(tp); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + tv = current_fs_time(inode->i_sb); + + if ((flags & XFS_ICHGTIME_MOD) && + !timespec_equal(&inode->i_mtime, &tv)) { + inode->i_mtime = tv; + ip->i_d.di_mtime.t_sec = tv.tv_sec; + ip->i_d.di_mtime.t_nsec = tv.tv_nsec; + } + if ((flags & XFS_ICHGTIME_CHG) && + !timespec_equal(&inode->i_ctime, &tv)) { + inode->i_ctime = tv; + ip->i_d.di_ctime.t_sec = tv.tv_sec; + ip->i_d.di_ctime.t_nsec = tv.tv_nsec; + } +} + +/* + * This is called to mark the fields indicated in fieldmask as needing + * to be logged when the transaction is committed. The inode must + * already be associated with the given transaction. + * + * The values for fieldmask are defined in xfs_inode_item.h. We always + * log all of the core inode if any of it has changed, and we always log + * all of the inline data/extents/b-tree root if any of them has changed. + */ +void +xfs_trans_log_inode( + xfs_trans_t *tp, + xfs_inode_t *ip, + uint flags) +{ + ASSERT(ip->i_itemp != NULL); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + tp->t_flags |= XFS_TRANS_DIRTY; + ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY; + + /* + * Always OR in the bits from the ili_last_fields field. + * This is to coordinate with the xfs_iflush() and xfs_iflush_done() + * routines in the eventual clearing of the ili_fields bits. + * See the big comment in xfs_iflush() for an explanation of + * this coordination mechanism. + */ + flags |= ip->i_itemp->ili_last_fields; + ip->i_itemp->ili_fields |= flags; +} + +#ifdef XFS_TRANS_DEBUG +/* + * Keep track of the state of the inode btree root to make sure we + * log it properly. + */ +STATIC void +xfs_trans_inode_broot_debug( + xfs_inode_t *ip) +{ + xfs_inode_log_item_t *iip; + + ASSERT(ip->i_itemp != NULL); + iip = ip->i_itemp; + if (iip->ili_root_size != 0) { + ASSERT(iip->ili_orig_root != NULL); + kmem_free(iip->ili_orig_root); + iip->ili_root_size = 0; + iip->ili_orig_root = NULL; + } + if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) { + ASSERT((ip->i_df.if_broot != NULL) && + (ip->i_df.if_broot_bytes > 0)); + iip->ili_root_size = ip->i_df.if_broot_bytes; + iip->ili_orig_root = + (char*)kmem_alloc(iip->ili_root_size, KM_SLEEP); + memcpy(iip->ili_orig_root, (char*)(ip->i_df.if_broot), + iip->ili_root_size); + } +} +#endif |