diff options
Diffstat (limited to 'module/zfs')
| -rw-r--r-- | module/zfs/zfs_dir.c | 142 |
1 files changed, 57 insertions, 85 deletions
diff --git a/module/zfs/zfs_dir.c b/module/zfs/zfs_dir.c index d2b5bc408..712cb4656 100644 --- a/module/zfs/zfs_dir.c +++ b/module/zfs/zfs_dir.c @@ -485,6 +485,57 @@ zfs_unlinked_add(znode_t *zp, dmu_tx_t *tx) } /* + * Clean up any znodes that had no links when we either crashed or + * (force) umounted the file system. + */ +void +zfs_unlinked_drain(zfs_sb_t *zsb) +{ + zap_cursor_t zc; + zap_attribute_t zap; + dmu_object_info_t doi; + znode_t *zp; + int error; + + /* + * Iterate over the contents of the unlinked set. + */ + for (zap_cursor_init(&zc, zsb->z_os, zsb->z_unlinkedobj); + zap_cursor_retrieve(&zc, &zap) == 0; + zap_cursor_advance(&zc)) { + + /* + * See what kind of object we have in list + */ + + error = dmu_object_info(zsb->z_os, zap.za_first_integer, &doi); + if (error != 0) + continue; + + ASSERT((doi.doi_type == DMU_OT_PLAIN_FILE_CONTENTS) || + (doi.doi_type == DMU_OT_DIRECTORY_CONTENTS)); + /* + * We need to re-mark these list entries for deletion, + * so we pull them back into core and set zp->z_unlinked. + */ + error = zfs_zget(zsb, zap.za_first_integer, &zp); + + /* + * We may pick up znodes that are already marked for deletion. + * This could happen during the purge of an extended attribute + * directory. All we need to do is skip over them, since they + * are already in the system marked z_unlinked. + */ + if (error != 0) + continue; + + zp->z_unlinked = B_TRUE; + iput(ZTOI(zp)); + } + zap_cursor_fini(&zc); +} + +/* * Delete the entire contents of a directory. Return a count * of the number of entries that could not be deleted. If we encounter * an error, return a count of at least one so that the directory stays @@ -517,7 +568,8 @@ zfs_purgedir(znode_t *dzp) continue; } - ASSERT(S_ISREG(ZTOI(xzp)->i_mode)||S_ISLNK(ZTOI(xzp)->i_mode)); + ASSERT(S_ISREG(ZTOI(xzp)->i_mode) || + S_ISLNK(ZTOI(xzp)->i_mode)); tx = dmu_tx_create(zsb->z_os); dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE); @@ -550,71 +602,6 @@ zfs_purgedir(znode_t *dzp) return (skipped); } -/* - * Clean up any znodes that had no links when we either crashed or - * (force) umounted the file system. - */ -void -zfs_unlinked_drain(zfs_sb_t *zsb) -{ - zap_cursor_t zc; - zap_attribute_t zap; - dmu_object_info_t doi; - znode_t *zp; - int error; - - /* - * Iterate over the contents of the unlinked set. - */ - for (zap_cursor_init(&zc, zsb->z_os, zsb->z_unlinkedobj); - zap_cursor_retrieve(&zc, &zap) == 0; - zap_cursor_advance(&zc)) { - - /* - * See what kind of object we have in list - */ - - error = dmu_object_info(zsb->z_os, zap.za_first_integer, &doi); - if (error != 0) - continue; - - ASSERT((doi.doi_type == DMU_OT_PLAIN_FILE_CONTENTS) || - (doi.doi_type == DMU_OT_DIRECTORY_CONTENTS)); - /* - * We need to re-mark these list entries for deletion, - * so we pull them back into core and set zp->z_unlinked. - */ - error = zfs_zget(zsb, zap.za_first_integer, &zp); - - /* - * We may pick up znodes that are already marked for deletion. - * This could happen during the purge of an extended attribute - * directory. All we need to do is skip over them, since they - * are already in the system marked z_unlinked. - */ - if (error != 0) - continue; - - zp->z_unlinked = B_TRUE; - - /* - * If this is an attribute directory, purge its contents. - */ - if (S_ISDIR(ZTOI(zp)->i_mode) && (zp->z_pflags & ZFS_XATTR)) { - /* - * We don't need to check the return value of - * zfs_purgedir here, because zfs_rmnode will just - * return this xattr directory to the unlinked set - * until all of its xattrs are gone. - */ - (void) zfs_purgedir(zp); - } - - iput(ZTOI(zp)); - } - zap_cursor_fini(&zc); -} - void zfs_rmnode(znode_t *zp) { @@ -624,7 +611,6 @@ zfs_rmnode(znode_t *zp) dmu_tx_t *tx; uint64_t acl_obj; uint64_t xattr_obj; - uint64_t count; int error; ASSERT(zp->z_links == 0); @@ -634,27 +620,13 @@ zfs_rmnode(znode_t *zp) * If this is an attribute directory, purge its contents. */ if (S_ISDIR(ZTOI(zp)->i_mode) && (zp->z_pflags & ZFS_XATTR)) { - error = zap_count(os, zp->z_id, &count); - if (error) { - zfs_znode_dmu_fini(zp); - return; - } - - if (count > 0) { - taskq_t *taskq; - + if (zfs_purgedir(zp) != 0) { /* - * There are still directory entries in this xattr - * directory. Let zfs_unlinked_drain() deal with - * them to avoid deadlocking this process in the - * zfs_purgedir()->zfs_zget()->ilookup() callpath - * on the xattr inode's I_FREEING bit. + * Not enough space to delete some xattrs. + * Leave it in the unlinked set. */ - taskq = dsl_pool_iput_taskq(dmu_objset_pool(os)); - taskq_dispatch(taskq, (task_func_t *) - zfs_unlinked_drain, zsb, TQ_SLEEP); - zfs_znode_dmu_fini(zp); + return; } } |