diff options
| -rw-r--r-- | fs/xfs/xfs_inode.c | 131 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.h | 6 | ||||
| -rw-r--r-- | fs/xfs/xfs_itable.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_sync.c | 4 |
5 files changed, 54 insertions, 91 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 257f3c463e0..34c985de5fa 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -132,23 +132,28 @@ xfs_inobp_check( #endif /* - * Find the buffer associated with the given inode map - * We do basic validation checks on the buffer once it has been - * retrieved from disk. + * This routine is called to map an inode to the buffer containing the on-disk + * version of the inode. It returns a pointer to the buffer containing the + * on-disk inode in the bpp parameter, and in the dipp parameter it returns a + * pointer to the on-disk inode within that buffer. + * + * If a non-zero error is returned, then the contents of bpp and dipp are + * undefined. */ -STATIC int +int xfs_imap_to_bp( - xfs_mount_t *mp, - xfs_trans_t *tp, - struct xfs_imap *imap, - xfs_buf_t **bpp, - uint buf_flags, - uint iget_flags) + struct xfs_mount *mp, + struct xfs_trans *tp, + struct xfs_imap *imap, + struct xfs_dinode **dipp, + struct xfs_buf **bpp, + uint buf_flags, + uint iget_flags) { - int error; - int i; - int ni; - xfs_buf_t *bp; + struct xfs_buf *bp; + int error; + int i; + int ni; buf_flags |= XBF_UNMAPPED; error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno, @@ -189,8 +194,8 @@ xfs_imap_to_bp( xfs_trans_brelse(tp, bp); return XFS_ERROR(EINVAL); } - XFS_CORRUPTION_ERROR("xfs_imap_to_bp", - XFS_ERRLEVEL_HIGH, mp, dip); + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_HIGH, + mp, dip); #ifdef DEBUG xfs_emerg(mp, "bad inode magic/vsn daddr %lld #%d (magic=%x)", @@ -204,7 +209,9 @@ xfs_imap_to_bp( } xfs_inobp_check(mp, bp); + *bpp = bp; + *dipp = (struct xfs_dinode *)xfs_buf_offset(bp, imap->im_boffset); return 0; } @@ -240,63 +247,15 @@ xfs_inotobp( if (error) return error; - error = xfs_imap_to_bp(mp, tp, &imap, &bp, 0, imap_flags); + error = xfs_imap_to_bp(mp, tp, &imap, dipp, &bp, 0, imap_flags); if (error) return error; - *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, imap.im_boffset); *bpp = bp; *offset = imap.im_boffset; return 0; } - -/* - * This routine is called to map an inode to the buffer containing - * the on-disk version of the inode. It returns a pointer to the - * buffer containing the on-disk inode in the bpp parameter, and in - * the dip parameter it returns a pointer to the on-disk inode within - * that buffer. - * - * If a non-zero error is returned, then the contents of bpp and - * dipp are undefined. - * - * The inode is expected to already been mapped to its buffer and read - * in once, thus we can use the mapping information stored in the inode - * rather than calling xfs_imap(). This allows us to avoid the overhead - * of looking at the inode btree for small block file systems - * (see xfs_imap()). - */ -int -xfs_itobp( - xfs_mount_t *mp, - xfs_trans_t *tp, - xfs_inode_t *ip, - xfs_dinode_t **dipp, - xfs_buf_t **bpp, - uint buf_flags) -{ - xfs_buf_t *bp; - int error; - - ASSERT(ip->i_imap.im_blkno != 0); - - error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp, buf_flags, 0); - if (error) - return error; - - if (!bp) { - ASSERT(buf_flags & XBF_TRYLOCK); - ASSERT(tp == NULL); - *bpp = NULL; - return EAGAIN; - } - - *dipp = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset); - *bpp = bp; - return 0; -} - /* * Move inode type and inode format specific information from the * on-disk inode to the in-core inode. For fifos, devs, and sockets @@ -796,10 +755,9 @@ xfs_iread( /* * Get pointers to the on-disk inode and the buffer containing it. */ - error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp, 0, iget_flags); + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0, iget_flags); if (error) return error; - dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset); /* * If we got something that isn't an inode it means someone @@ -876,7 +834,7 @@ xfs_iread( /* * Use xfs_trans_brelse() to release the buffer containing the * on-disk inode, because it was acquired with xfs_trans_read_buf() - * in xfs_itobp() above. If tp is NULL, this is just a normal + * in xfs_imap_to_bp() above. If tp is NULL, this is just a normal * brelse(). If we're within a transaction, then xfs_trans_brelse() * will only release the buffer if it is not dirty within the * transaction. It will be OK to release the buffer in this case, @@ -1355,7 +1313,8 @@ xfs_iunlink( * Here we put the head pointer into our next pointer, * and then we fall through to point the head at us. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0); + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &ibp, + 0, 0); if (error) return error; @@ -1429,16 +1388,16 @@ xfs_iunlink_remove( if (be32_to_cpu(agi->agi_unlinked[bucket_index]) == agino) { /* - * We're at the head of the list. Get the inode's - * on-disk buffer to see if there is anyone after us - * on the list. Only modify our next pointer if it - * is not already NULLAGINO. This saves us the overhead - * of dealing with the buffer when there is no need to - * change it. + * We're at the head of the list. Get the inode's on-disk + * buffer to see if there is anyone after us on the list. + * Only modify our next pointer if it is not already NULLAGINO. + * This saves us the overhead of dealing with the buffer when + * there is no need to change it. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0); + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &ibp, + 0, 0); if (error) { - xfs_warn(mp, "%s: xfs_itobp() returned error %d.", + xfs_warn(mp, "%s: xfs_imap_to_bp returned error %d.", __func__, error); return error; } @@ -1493,13 +1452,15 @@ xfs_iunlink_remove( ASSERT(next_agino != NULLAGINO); ASSERT(next_agino != 0); } + /* - * Now last_ibp points to the buffer previous to us on - * the unlinked list. Pull us from the list. + * Now last_ibp points to the buffer previous to us on the + * unlinked list. Pull us from the list. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, 0); + error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &ibp, + 0, 0); if (error) { - xfs_warn(mp, "%s: xfs_itobp(2) returned error %d.", + xfs_warn(mp, "%s: xfs_imap_to_bp(2) returned error %d.", __func__, error); return error; } @@ -1749,7 +1710,8 @@ xfs_ifree( xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, 0); + error = xfs_imap_to_bp(ip->i_mount, tp, &ip->i_imap, &dip, &ibp, + 0, 0); if (error) return error; @@ -2428,7 +2390,7 @@ xfs_iflush( /* * For stale inodes we cannot rely on the backing buffer remaining * stale in cache for the remaining life of the stale inode and so - * xfs_itobp() below may give us a buffer that no longer contains + * xfs_imap_to_bp() below may give us a buffer that no longer contains * inodes below. We have to check this after ensuring the inode is * unpinned so that it is safe to reclaim the stale inode after the * flush call. @@ -2454,7 +2416,8 @@ xfs_iflush( /* * Get the buffer containing the on-disk inode. */ - error = xfs_itobp(mp, NULL, ip, &dip, &bp, XBF_TRYLOCK); + error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &dip, &bp, XBF_TRYLOCK, + 0); if (error || !bp) { xfs_ifunlock(ip); return error; diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 1efff36a75b..942fd7f9110 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -560,9 +560,9 @@ do { \ int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, struct xfs_dinode **, struct xfs_buf **, int *, uint); -int xfs_itobp(struct xfs_mount *, struct xfs_trans *, - struct xfs_inode *, struct xfs_dinode **, - struct xfs_buf **, uint); +int xfs_imap_to_bp(struct xfs_mount *, struct xfs_trans *, + struct xfs_imap *, struct xfs_dinode **, + struct xfs_buf **, uint, uint); int xfs_iread(struct xfs_mount *, struct xfs_trans *, struct xfs_inode *, uint); void xfs_dinode_to_disk(struct xfs_dinode *, diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index eff577a9b67..01d10a66e30 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -555,7 +555,7 @@ xfs_bulkstat_single( /* * note that requesting valid inode numbers which are not allocated - * to inodes will most likely cause xfs_itobp to generate warning + * to inodes will most likely cause xfs_imap_to_bp to generate warning * messages about bad magic numbers. This is ok. The fact that * the inode isn't actually an inode is handled by the * error check below. Done this way to make the usual case faster diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index a76ba886e73..5da3ace352b 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -3106,7 +3106,7 @@ xlog_recover_process_one_iunlink( /* * Get the on disk inode to find the next inode in the bucket. */ - error = xfs_itobp(mp, NULL, ip, &dip, &ibp, 0); + error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &dip, &ibp, 0, 0); if (error) goto fail_iput; diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c index 1e9ee064dbb..e61fc151907 100644 --- a/fs/xfs/xfs_sync.c +++ b/fs/xfs/xfs_sync.c @@ -712,8 +712,8 @@ restart: * Note that xfs_iflush will never block on the inode buffer lock, as * xfs_ifree_cluster() can lock the inode buffer before it locks the * ip->i_lock, and we are doing the exact opposite here. As a result, - * doing a blocking xfs_itobp() to get the cluster buffer would result - * in an ABBA deadlock with xfs_ifree_cluster(). + * doing a blocking xfs_imap_to_bp() to get the cluster buffer would + * result in an ABBA deadlock with xfs_ifree_cluster(). * * As xfs_ifree_cluser() must gather all inodes that are active in the * cache to mark them stale, if we hit this case we don't actually want |