cfs_mem_cache_t *ll_file_data_slab;
CFS_LIST_HEAD(ll_super_blocks);
-cfs_spinlock_t ll_sb_lock = CFS_SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(ll_sb_lock);
#ifndef MS_HAS_NEW_AOPS
extern struct address_space_operations ll_aops;
CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
sb->s_op = &lustre_super_operations;
-#if THREAD_SIZE >= 8192
+#if THREAD_SIZE >= 8192 /*b=17630*/ && !defined(HAVE_FSTYPE_MOUNT) /*LU-812*/
sb->s_export_op = &lustre_export_operations;
#endif
lli->lli_symlink_name = NULL;
cfs_init_rwsem(&lli->lli_trunc_sem);
cfs_mutex_init(&lli->lli_write_mutex);
- lli->lli_async_rc = 0;
- lli->lli_write_rc = 0;
- cfs_init_rwsem(&lli->lli_glimpse_sem);
- lli->lli_glimpse_time = 0;
- CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
- lli->lli_agl_index = 0;
- }
+ cfs_init_rwsem(&lli->lli_glimpse_sem);
+ lli->lli_glimpse_time = 0;
+ CFS_INIT_LIST_HEAD(&lli->lli_agl_list);
+ lli->lli_agl_index = 0;
+ lli->lli_async_rc = 0;
+ }
cfs_mutex_init(&lli->lli_layout_mutex);
}
return rc;
}
+#ifndef HAVE_VFS_INODE_NEWSIZE_OK
+/**
+ * inode_newsize_ok - may this inode be truncated to a given size
+ * @inode: the inode to be truncated
+ * @offset: the new size to assign to the inode
+ * @Returns: 0 on success, -ve errno on failure
+ *
+ * inode_newsize_ok will check filesystem limits and ulimits to check that the
+ * new inode size is within limits. inode_newsize_ok will also send SIGXFSZ
+ * when necessary. Caller must not proceed with inode size change if failure is
+ * returned. @inode must be a file (not directory), with appropriate
+ * permissions to allow truncate (inode_newsize_ok does NOT check these
+ * conditions).
+ *
+ * inode_newsize_ok must be called with i_mutex held.
+ */
+int inode_newsize_ok(const struct inode *inode, loff_t offset)
+{
+ if (inode->i_size < offset) {
+ unsigned long limit;
+
+ limit = rlimit(RLIMIT_FSIZE);
+ if (limit != RLIM_INFINITY && offset > limit)
+ goto out_sig;
+ if (offset > inode->i_sb->s_maxbytes)
+ goto out_big;
+ } else {
+ /*
+ * truncation of in-use swapfiles is disallowed - it would
+ * cause subsequent swapout to scribble on the now-freed
+ * blocks.
+ */
+ if (IS_SWAPFILE(inode))
+ return -ETXTBSY;
+ }
+
+ return 0;
+out_sig:
+ send_sig(SIGXFSZ, current, 0);
+out_big:
+ return -EFBIG;
+}
+#endif
+
/* If this inode has objects allocated to it (lsm != NULL), then the OST
* object(s) determine the file size and mtime. Otherwise, the MDS will
* keep these values until such a time that objects are allocated for it.