| /* |
| * Copyright (c) 2000-2002,2005 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_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_buf_item.h" |
| #include "xfs_trans_priv.h" |
| #include "xfs_error.h" |
| #include "xfs_trace.h" |
| |
| /* |
| * Check to see if a buffer matching the given parameters is already |
| * a part of the given transaction. |
| */ |
| STATIC struct xfs_buf * |
| xfs_trans_buf_item_match( |
| struct xfs_trans *tp, |
| struct xfs_buftarg *target, |
| xfs_daddr_t blkno, |
| int len) |
| { |
| struct xfs_log_item_desc *lidp; |
| struct xfs_buf_log_item *blip; |
| |
| len = BBTOB(len); |
| list_for_each_entry(lidp, &tp->t_items, lid_trans) { |
| blip = (struct xfs_buf_log_item *)lidp->lid_item; |
| if (blip->bli_item.li_type == XFS_LI_BUF && |
| blip->bli_buf->b_target == target && |
| XFS_BUF_ADDR(blip->bli_buf) == blkno && |
| BBTOB(blip->bli_buf->b_length) == len) |
| return blip->bli_buf; |
| } |
| |
| return NULL; |
| } |
| |
| /* |
| * Add the locked buffer to the transaction. |
| * |
| * The buffer must be locked, and it cannot be associated with any |
| * transaction. |
| * |
| * If the buffer does not yet have a buf log item associated with it, |
| * then allocate one for it. Then add the buf item to the transaction. |
| */ |
| STATIC void |
| _xfs_trans_bjoin( |
| struct xfs_trans *tp, |
| struct xfs_buf *bp, |
| int reset_recur) |
| { |
| struct xfs_buf_log_item *bip; |
| |
| ASSERT(bp->b_transp == NULL); |
| |
| /* |
| * The xfs_buf_log_item pointer is stored in b_fsprivate. If |
| * it doesn't have one yet, then allocate one and initialize it. |
| * The checks to see if one is there are in xfs_buf_item_init(). |
| */ |
| xfs_buf_item_init(bp, tp->t_mountp); |
| bip = bp->b_fspriv; |
| ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
| ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); |
| ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); |
| if (reset_recur) |
| bip->bli_recur = 0; |
| |
| /* |
| * Take a reference for this transaction on the buf item. |
| */ |
| atomic_inc(&bip->bli_refcount); |
| |
| /* |
| * Get a log_item_desc to point at the new item. |
| */ |
| xfs_trans_add_item(tp, &bip->bli_item); |
| |
| /* |
| * Initialize b_fsprivate2 so we can find it with incore_match() |
| * in xfs_trans_get_buf() and friends above. |
| */ |
| bp->b_transp = tp; |
| |
| } |
| |
| void |
| xfs_trans_bjoin( |
| struct xfs_trans *tp, |
| struct xfs_buf *bp) |
| { |
| _xfs_trans_bjoin(tp, bp, 0); |
| trace_xfs_trans_bjoin(bp->b_fspriv); |
| } |
| |
| /* |
| * Get and lock the buffer for the caller if it is not already |
| * locked within the given transaction. If it is already locked |
| * within the transaction, just increment its lock recursion count |
| * and return a pointer to it. |
| * |
| * If the transaction pointer is NULL, make this just a normal |
| * get_buf() call. |
| */ |
| xfs_buf_t * |
| xfs_trans_get_buf(xfs_trans_t *tp, |
| xfs_buftarg_t *target_dev, |
| xfs_daddr_t blkno, |
| int len, |
| uint flags) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| |
| if (flags == 0) |
| flags = XBF_MAPPED; |
| |
| /* |
| * Default to a normal get_buf() call if the tp is NULL. |
| */ |
| if (tp == NULL) |
| return xfs_buf_get(target_dev, blkno, len, flags); |
| |
| /* |
| * If we find the buffer in the cache with this transaction |
| * pointer in its b_fsprivate2 field, then we know we already |
| * have it locked. In this case we just increment the lock |
| * recursion count and return the buffer to the caller. |
| */ |
| bp = xfs_trans_buf_item_match(tp, target_dev, blkno, len); |
| if (bp != NULL) { |
| ASSERT(xfs_buf_islocked(bp)); |
| if (XFS_FORCED_SHUTDOWN(tp->t_mountp)) { |
| xfs_buf_stale(bp); |
| XFS_BUF_DONE(bp); |
| } |
| |
| ASSERT(bp->b_transp == tp); |
| bip = bp->b_fspriv; |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| bip->bli_recur++; |
| trace_xfs_trans_get_buf_recur(bip); |
| return (bp); |
| } |
| |
| bp = xfs_buf_get(target_dev, blkno, len, flags); |
| if (bp == NULL) { |
| return NULL; |
| } |
| |
| ASSERT(!bp->b_error); |
| |
| _xfs_trans_bjoin(tp, bp, 1); |
| trace_xfs_trans_get_buf(bp->b_fspriv); |
| return (bp); |
| } |
| |
| /* |
| * Get and lock the superblock buffer of this file system for the |
| * given transaction. |
| * |
| * We don't need to use incore_match() here, because the superblock |
| * buffer is a private buffer which we keep a pointer to in the |
| * mount structure. |
| */ |
| xfs_buf_t * |
| xfs_trans_getsb(xfs_trans_t *tp, |
| struct xfs_mount *mp, |
| int flags) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| |
| /* |
| * Default to just trying to lock the superblock buffer |
| * if tp is NULL. |
| */ |
| if (tp == NULL) { |
| return (xfs_getsb(mp, flags)); |
| } |
| |
| /* |
| * If the superblock buffer already has this transaction |
| * pointer in its b_fsprivate2 field, then we know we already |
| * have it locked. In this case we just increment the lock |
| * recursion count and return the buffer to the caller. |
| */ |
| bp = mp->m_sb_bp; |
| if (bp->b_transp == tp) { |
| bip = bp->b_fspriv; |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| bip->bli_recur++; |
| trace_xfs_trans_getsb_recur(bip); |
| return (bp); |
| } |
| |
| bp = xfs_getsb(mp, flags); |
| if (bp == NULL) |
| return NULL; |
| |
| _xfs_trans_bjoin(tp, bp, 1); |
| trace_xfs_trans_getsb(bp->b_fspriv); |
| return (bp); |
| } |
| |
| #ifdef DEBUG |
| xfs_buftarg_t *xfs_error_target; |
| int xfs_do_error; |
| int xfs_req_num; |
| int xfs_error_mod = 33; |
| #endif |
| |
| /* |
| * Get and lock the buffer for the caller if it is not already |
| * locked within the given transaction. If it has not yet been |
| * read in, read it from disk. If it is already locked |
| * within the transaction and already read in, just increment its |
| * lock recursion count and return a pointer to it. |
| * |
| * If the transaction pointer is NULL, make this just a normal |
| * read_buf() call. |
| */ |
| int |
| xfs_trans_read_buf( |
| xfs_mount_t *mp, |
| xfs_trans_t *tp, |
| xfs_buftarg_t *target, |
| xfs_daddr_t blkno, |
| int len, |
| uint flags, |
| xfs_buf_t **bpp) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| int error; |
| |
| *bpp = NULL; |
| |
| if (flags == 0) |
| flags = XBF_MAPPED; |
| |
| /* |
| * Default to a normal get_buf() call if the tp is NULL. |
| */ |
| if (tp == NULL) { |
| bp = xfs_buf_read(target, blkno, len, flags); |
| if (!bp) |
| return (flags & XBF_TRYLOCK) ? |
| EAGAIN : XFS_ERROR(ENOMEM); |
| |
| if (bp->b_error) { |
| error = bp->b_error; |
| xfs_buf_ioerror_alert(bp, __func__); |
| XFS_BUF_UNDONE(bp); |
| xfs_buf_stale(bp); |
| xfs_buf_relse(bp); |
| return error; |
| } |
| #ifdef DEBUG |
| if (xfs_do_error) { |
| if (xfs_error_target == target) { |
| if (((xfs_req_num++) % xfs_error_mod) == 0) { |
| xfs_buf_relse(bp); |
| xfs_debug(mp, "Returning error!"); |
| return XFS_ERROR(EIO); |
| } |
| } |
| } |
| #endif |
| if (XFS_FORCED_SHUTDOWN(mp)) |
| goto shutdown_abort; |
| *bpp = bp; |
| return 0; |
| } |
| |
| /* |
| * If we find the buffer in the cache with this transaction |
| * pointer in its b_fsprivate2 field, then we know we already |
| * have it locked. If it is already read in we just increment |
| * the lock recursion count and return the buffer to the caller. |
| * If the buffer is not yet read in, then we read it in, increment |
| * the lock recursion count, and return it to the caller. |
| */ |
| bp = xfs_trans_buf_item_match(tp, target, blkno, len); |
| if (bp != NULL) { |
| ASSERT(xfs_buf_islocked(bp)); |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bp->b_fspriv != NULL); |
| ASSERT(!bp->b_error); |
| if (!(XFS_BUF_ISDONE(bp))) { |
| trace_xfs_trans_read_buf_io(bp, _RET_IP_); |
| ASSERT(!XFS_BUF_ISASYNC(bp)); |
| XFS_BUF_READ(bp); |
| xfsbdstrat(tp->t_mountp, bp); |
| error = xfs_buf_iowait(bp); |
| if (error) { |
| xfs_buf_ioerror_alert(bp, __func__); |
| xfs_buf_relse(bp); |
| /* |
| * We can gracefully recover from most read |
| * errors. Ones we can't are those that happen |
| * after the transaction's already dirty. |
| */ |
| if (tp->t_flags & XFS_TRANS_DIRTY) |
| xfs_force_shutdown(tp->t_mountp, |
| SHUTDOWN_META_IO_ERROR); |
| return error; |
| } |
| } |
| /* |
| * We never locked this buf ourselves, so we shouldn't |
| * brelse it either. Just get out. |
| */ |
| if (XFS_FORCED_SHUTDOWN(mp)) { |
| trace_xfs_trans_read_buf_shut(bp, _RET_IP_); |
| *bpp = NULL; |
| return XFS_ERROR(EIO); |
| } |
| |
| |
| bip = bp->b_fspriv; |
| bip->bli_recur++; |
| |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| trace_xfs_trans_read_buf_recur(bip); |
| *bpp = bp; |
| return 0; |
| } |
| |
| bp = xfs_buf_read(target, blkno, len, flags); |
| if (bp == NULL) { |
| *bpp = NULL; |
| return (flags & XBF_TRYLOCK) ? |
| 0 : XFS_ERROR(ENOMEM); |
| } |
| if (bp->b_error) { |
| error = bp->b_error; |
| xfs_buf_stale(bp); |
| XFS_BUF_DONE(bp); |
| xfs_buf_ioerror_alert(bp, __func__); |
| if (tp->t_flags & XFS_TRANS_DIRTY) |
| xfs_force_shutdown(tp->t_mountp, SHUTDOWN_META_IO_ERROR); |
| xfs_buf_relse(bp); |
| return error; |
| } |
| #ifdef DEBUG |
| if (xfs_do_error && !(tp->t_flags & XFS_TRANS_DIRTY)) { |
| if (xfs_error_target == target) { |
| if (((xfs_req_num++) % xfs_error_mod) == 0) { |
| xfs_force_shutdown(tp->t_mountp, |
| SHUTDOWN_META_IO_ERROR); |
| xfs_buf_relse(bp); |
| xfs_debug(mp, "Returning trans error!"); |
| return XFS_ERROR(EIO); |
| } |
| } |
| } |
| #endif |
| if (XFS_FORCED_SHUTDOWN(mp)) |
| goto shutdown_abort; |
| |
| _xfs_trans_bjoin(tp, bp, 1); |
| trace_xfs_trans_read_buf(bp->b_fspriv); |
| |
| *bpp = bp; |
| return 0; |
| |
| shutdown_abort: |
| trace_xfs_trans_read_buf_shut(bp, _RET_IP_); |
| xfs_buf_relse(bp); |
| *bpp = NULL; |
| return XFS_ERROR(EIO); |
| } |
| |
| |
| /* |
| * Release the buffer bp which was previously acquired with one of the |
| * xfs_trans_... buffer allocation routines if the buffer has not |
| * been modified within this transaction. If the buffer is modified |
| * within this transaction, do decrement the recursion count but do |
| * not release the buffer even if the count goes to 0. If the buffer is not |
| * modified within the transaction, decrement the recursion count and |
| * release the buffer if the recursion count goes to 0. |
| * |
| * If the buffer is to be released and it was not modified before |
| * this transaction began, then free the buf_log_item associated with it. |
| * |
| * If the transaction pointer is NULL, make this just a normal |
| * brelse() call. |
| */ |
| void |
| xfs_trans_brelse(xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| |
| /* |
| * Default to a normal brelse() call if the tp is NULL. |
| */ |
| if (tp == NULL) { |
| ASSERT(bp->b_transp == NULL); |
| xfs_buf_relse(bp); |
| return; |
| } |
| |
| ASSERT(bp->b_transp == tp); |
| bip = bp->b_fspriv; |
| ASSERT(bip->bli_item.li_type == XFS_LI_BUF); |
| ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
| ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| trace_xfs_trans_brelse(bip); |
| |
| /* |
| * If the release is just for a recursive lock, |
| * then decrement the count and return. |
| */ |
| if (bip->bli_recur > 0) { |
| bip->bli_recur--; |
| return; |
| } |
| |
| /* |
| * If the buffer is dirty within this transaction, we can't |
| * release it until we commit. |
| */ |
| if (bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY) |
| return; |
| |
| /* |
| * If the buffer has been invalidated, then we can't release |
| * it until the transaction commits to disk unless it is re-dirtied |
| * as part of this transaction. This prevents us from pulling |
| * the item from the AIL before we should. |
| */ |
| if (bip->bli_flags & XFS_BLI_STALE) |
| return; |
| |
| ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED)); |
| |
| /* |
| * Free up the log item descriptor tracking the released item. |
| */ |
| xfs_trans_del_item(&bip->bli_item); |
| |
| /* |
| * Clear the hold flag in the buf log item if it is set. |
| * We wouldn't want the next user of the buffer to |
| * get confused. |
| */ |
| if (bip->bli_flags & XFS_BLI_HOLD) { |
| bip->bli_flags &= ~XFS_BLI_HOLD; |
| } |
| |
| /* |
| * Drop our reference to the buf log item. |
| */ |
| atomic_dec(&bip->bli_refcount); |
| |
| /* |
| * If the buf item is not tracking data in the log, then |
| * we must free it before releasing the buffer back to the |
| * free pool. Before releasing the buffer to the free pool, |
| * clear the transaction pointer in b_fsprivate2 to dissolve |
| * its relation to this transaction. |
| */ |
| if (!xfs_buf_item_dirty(bip)) { |
| /*** |
| ASSERT(bp->b_pincount == 0); |
| ***/ |
| ASSERT(atomic_read(&bip->bli_refcount) == 0); |
| ASSERT(!(bip->bli_item.li_flags & XFS_LI_IN_AIL)); |
| ASSERT(!(bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF)); |
| xfs_buf_item_relse(bp); |
| } |
| |
| bp->b_transp = NULL; |
| xfs_buf_relse(bp); |
| } |
| |
| /* |
| * Mark the buffer as not needing to be unlocked when the buf item's |
| * IOP_UNLOCK() routine is called. The buffer must already be locked |
| * and associated with the given transaction. |
| */ |
| /* ARGSUSED */ |
| void |
| xfs_trans_bhold(xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
| ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| bip->bli_flags |= XFS_BLI_HOLD; |
| trace_xfs_trans_bhold(bip); |
| } |
| |
| /* |
| * Cancel the previous buffer hold request made on this buffer |
| * for this transaction. |
| */ |
| void |
| xfs_trans_bhold_release(xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
| ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL)); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| ASSERT(bip->bli_flags & XFS_BLI_HOLD); |
| |
| bip->bli_flags &= ~XFS_BLI_HOLD; |
| trace_xfs_trans_bhold_release(bip); |
| } |
| |
| /* |
| * This is called to mark bytes first through last inclusive of the given |
| * buffer as needing to be logged when the transaction is committed. |
| * The buffer must already be associated with the given transaction. |
| * |
| * First and last are numbers relative to the beginning of this buffer, |
| * so the first byte in the buffer is numbered 0 regardless of the |
| * value of b_blkno. |
| */ |
| void |
| xfs_trans_log_buf(xfs_trans_t *tp, |
| xfs_buf_t *bp, |
| uint first, |
| uint last) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(first <= last && last < BBTOB(bp->b_length)); |
| ASSERT(bp->b_iodone == NULL || |
| bp->b_iodone == xfs_buf_iodone_callbacks); |
| |
| /* |
| * Mark the buffer as needing to be written out eventually, |
| * and set its iodone function to remove the buffer's buf log |
| * item from the AIL and free it when the buffer is flushed |
| * to disk. See xfs_buf_attach_iodone() for more details |
| * on li_cb and xfs_buf_iodone_callbacks(). |
| * If we end up aborting this transaction, we trap this buffer |
| * inside the b_bdstrat callback so that this won't get written to |
| * disk. |
| */ |
| XFS_BUF_DONE(bp); |
| |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| bp->b_iodone = xfs_buf_iodone_callbacks; |
| bip->bli_item.li_cb = xfs_buf_iodone; |
| |
| trace_xfs_trans_log_buf(bip); |
| |
| /* |
| * If we invalidated the buffer within this transaction, then |
| * cancel the invalidation now that we're dirtying the buffer |
| * again. There are no races with the code in xfs_buf_item_unpin(), |
| * because we have a reference to the buffer this entire time. |
| */ |
| if (bip->bli_flags & XFS_BLI_STALE) { |
| bip->bli_flags &= ~XFS_BLI_STALE; |
| ASSERT(XFS_BUF_ISSTALE(bp)); |
| XFS_BUF_UNSTALE(bp); |
| bip->bli_format.blf_flags &= ~XFS_BLF_CANCEL; |
| } |
| |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
| bip->bli_flags |= XFS_BLI_LOGGED; |
| xfs_buf_item_log(bip, first, last); |
| } |
| |
| |
| /* |
| * Invalidate a buffer that is being used within a transaction. |
| * |
| * Typically this is because the blocks in the buffer are being freed, so we |
| * need to prevent it from being written out when we're done. Allowing it |
| * to be written again might overwrite data in the free blocks if they are |
| * reallocated to a file. |
| * |
| * We prevent the buffer from being written out by marking it stale. We can't |
| * get rid of the buf log item at this point because the buffer may still be |
| * pinned by another transaction. If that is the case, then we'll wait until |
| * the buffer is committed to disk for the last time (we can tell by the ref |
| * count) and free it in xfs_buf_item_unpin(). Until that happens we will |
| * keep the buffer locked so that the buffer and buf log item are not reused. |
| * |
| * We also set the XFS_BLF_CANCEL flag in the buf log format structure and log |
| * the buf item. This will be used at recovery time to determine that copies |
| * of the buffer in the log before this should not be replayed. |
| * |
| * We mark the item descriptor and the transaction dirty so that we'll hold |
| * the buffer until after the commit. |
| * |
| * Since we're invalidating the buffer, we also clear the state about which |
| * parts of the buffer have been logged. We also clear the flag indicating |
| * that this is an inode buffer since the data in the buffer will no longer |
| * be valid. |
| * |
| * We set the stale bit in the buffer as well since we're getting rid of it. |
| */ |
| void |
| xfs_trans_binval( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| trace_xfs_trans_binval(bip); |
| |
| if (bip->bli_flags & XFS_BLI_STALE) { |
| /* |
| * If the buffer is already invalidated, then |
| * just return. |
| */ |
| ASSERT(XFS_BUF_ISSTALE(bp)); |
| ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY))); |
| ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF)); |
| ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL); |
| ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY); |
| ASSERT(tp->t_flags & XFS_TRANS_DIRTY); |
| return; |
| } |
| |
| xfs_buf_stale(bp); |
| |
| bip->bli_flags |= XFS_BLI_STALE; |
| bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY); |
| bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF; |
| bip->bli_format.blf_flags |= XFS_BLF_CANCEL; |
| memset((char *)(bip->bli_format.blf_data_map), 0, |
| (bip->bli_format.blf_map_size * sizeof(uint))); |
| bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| } |
| |
| /* |
| * This call is used to indicate that the buffer contains on-disk inodes which |
| * must be handled specially during recovery. They require special handling |
| * because only the di_next_unlinked from the inodes in the buffer should be |
| * recovered. The rest of the data in the buffer is logged via the inodes |
| * themselves. |
| * |
| * All we do is set the XFS_BLI_INODE_BUF flag in the items flags so it can be |
| * transferred to the buffer's log format structure so that we'll know what to |
| * do at recovery time. |
| */ |
| void |
| xfs_trans_inode_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| bip->bli_flags |= XFS_BLI_INODE_BUF; |
| } |
| |
| /* |
| * This call is used to indicate that the buffer is going to |
| * be staled and was an inode buffer. This means it gets |
| * special processing during unpin - where any inodes |
| * associated with the buffer should be removed from ail. |
| * There is also special processing during recovery, |
| * any replay of the inodes in the buffer needs to be |
| * prevented as the buffer may have been reused. |
| */ |
| void |
| xfs_trans_stale_inode_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| bip->bli_flags |= XFS_BLI_STALE_INODE; |
| bip->bli_item.li_cb = xfs_buf_iodone; |
| } |
| |
| /* |
| * Mark the buffer as being one which contains newly allocated |
| * inodes. We need to make sure that even if this buffer is |
| * relogged as an 'inode buf' we still recover all of the inode |
| * images in the face of a crash. This works in coordination with |
| * xfs_buf_item_committed() to ensure that the buffer remains in the |
| * AIL at its original location even after it has been relogged. |
| */ |
| /* ARGSUSED */ |
| void |
| xfs_trans_inode_alloc_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| bip->bli_flags |= XFS_BLI_INODE_ALLOC_BUF; |
| } |
| |
| |
| /* |
| * Similar to xfs_trans_inode_buf(), this marks the buffer as a cluster of |
| * dquots. However, unlike in inode buffer recovery, dquot buffers get |
| * recovered in their entirety. (Hence, no XFS_BLI_DQUOT_ALLOC_BUF flag). |
| * The only thing that makes dquot buffers different from regular |
| * buffers is that we must not replay dquot bufs when recovering |
| * if a _corresponding_ quotaoff has happened. We also have to distinguish |
| * between usr dquot bufs and grp dquot bufs, because usr and grp quotas |
| * can be turned off independently. |
| */ |
| /* ARGSUSED */ |
| void |
| xfs_trans_dquot_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp, |
| uint type) |
| { |
| xfs_buf_log_item_t *bip = bp->b_fspriv; |
| |
| ASSERT(bp->b_transp == tp); |
| ASSERT(bip != NULL); |
| ASSERT(type == XFS_BLF_UDQUOT_BUF || |
| type == XFS_BLF_PDQUOT_BUF || |
| type == XFS_BLF_GDQUOT_BUF); |
| ASSERT(atomic_read(&bip->bli_refcount) > 0); |
| |
| bip->bli_format.blf_flags |= type; |
| } |