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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 14:26:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 14:26:52 -0400
commit5f248c9c251c60af3403902b26e08de43964ea0b (patch)
tree6d3328e72a7e4015a64017eb30be18095c6a3c64 /fs/logfs/inode.c
parentf6cec0ae58c17522a7bc4e2f39dae19f199ab534 (diff)
parentdca332528bc69e05f67161e1ed59929633d5e63d (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits) no need for list_for_each_entry_safe()/resetting with superblock list Fix sget() race with failing mount vfs: don't hold s_umount over close_bdev_exclusive() call sysv: do not mark superblock dirty on remount sysv: do not mark superblock dirty on mount btrfs: remove junk sb_dirt change BFS: clean up the superblock usage AFFS: wait for sb synchronization when needed AFFS: clean up dirty flag usage cifs: truncate fallout mbcache: fix shrinker function return value mbcache: Remove unused features add f_flags to struct statfs(64) pass a struct path to vfs_statfs update VFS documentation for method changes. All filesystems that need invalidate_inode_buffers() are doing that explicitly convert remaining ->clear_inode() to ->evict_inode() Make ->drop_inode() just return whether inode needs to be dropped fs/inode.c:clear_inode() is gone fs/inode.c:evict() doesn't care about delete vs. non-delete paths now ... Fix up trivial conflicts in fs/nilfs2/super.c
Diffstat (limited to 'fs/logfs/inode.c')
-rw-r--r--fs/logfs/inode.c51
1 files changed, 19 insertions, 32 deletions
diff --git a/fs/logfs/inode.c b/fs/logfs/inode.c
index f602e230e162..d8c71ece098f 100644
--- a/fs/logfs/inode.c
+++ b/fs/logfs/inode.c
@@ -235,33 +235,21 @@ static struct inode *logfs_alloc_inode(struct super_block *sb)
235 * purpose is to create a new inode that will not trigger the warning if such 235 * purpose is to create a new inode that will not trigger the warning if such
236 * an inode is still in use. An ugly hack, no doubt. Suggections for 236 * an inode is still in use. An ugly hack, no doubt. Suggections for
237 * improvement are welcome. 237 * improvement are welcome.
238 *
239 * AV: that's what ->put_super() is for...
238 */ 240 */
239struct inode *logfs_new_meta_inode(struct super_block *sb, u64 ino) 241struct inode *logfs_new_meta_inode(struct super_block *sb, u64 ino)
240{ 242{
241 struct inode *inode; 243 struct inode *inode;
242 244
243 inode = logfs_alloc_inode(sb); 245 inode = new_inode(sb);
244 if (!inode) 246 if (!inode)
245 return ERR_PTR(-ENOMEM); 247 return ERR_PTR(-ENOMEM);
246 248
247 inode->i_mode = S_IFREG; 249 inode->i_mode = S_IFREG;
248 inode->i_ino = ino; 250 inode->i_ino = ino;
249 inode->i_sb = sb; 251 inode->i_data.a_ops = &logfs_reg_aops;
250 252 mapping_set_gfp_mask(&inode->i_data, GFP_NOFS);
251 /* This is a blatant copy of alloc_inode code. We'd need alloc_inode
252 * to be nonstatic, alas. */
253 {
254 struct address_space * const mapping = &inode->i_data;
255
256 mapping->a_ops = &logfs_reg_aops;
257 mapping->host = inode;
258 mapping->flags = 0;
259 mapping_set_gfp_mask(mapping, GFP_NOFS);
260 mapping->assoc_mapping = NULL;
261 mapping->backing_dev_info = &default_backing_dev_info;
262 inode->i_mapping = mapping;
263 inode->i_nlink = 1;
264 }
265 253
266 return inode; 254 return inode;
267} 255}
@@ -277,7 +265,7 @@ struct inode *logfs_read_meta_inode(struct super_block *sb, u64 ino)
277 265
278 err = logfs_read_inode(inode); 266 err = logfs_read_inode(inode);
279 if (err) { 267 if (err) {
280 destroy_meta_inode(inode); 268 iput(inode);
281 return ERR_PTR(err); 269 return ERR_PTR(err);
282 } 270 }
283 logfs_inode_setops(inode); 271 logfs_inode_setops(inode);
@@ -298,18 +286,8 @@ static int logfs_write_inode(struct inode *inode, struct writeback_control *wbc)
298 return ret; 286 return ret;
299} 287}
300 288
301void destroy_meta_inode(struct inode *inode)
302{
303 if (inode) {
304 if (inode->i_data.nrpages)
305 truncate_inode_pages(&inode->i_data, 0);
306 logfs_clear_inode(inode);
307 kmem_cache_free(logfs_inode_cache, logfs_inode(inode));
308 }
309}
310
311/* called with inode_lock held */ 289/* called with inode_lock held */
312static void logfs_drop_inode(struct inode *inode) 290static int logfs_drop_inode(struct inode *inode)
313{ 291{
314 struct logfs_super *super = logfs_super(inode->i_sb); 292 struct logfs_super *super = logfs_super(inode->i_sb);
315 struct logfs_inode *li = logfs_inode(inode); 293 struct logfs_inode *li = logfs_inode(inode);
@@ -317,7 +295,7 @@ static void logfs_drop_inode(struct inode *inode)
317 spin_lock(&logfs_inode_lock); 295 spin_lock(&logfs_inode_lock);
318 list_move(&li->li_freeing_list, &super->s_freeing_list); 296 list_move(&li->li_freeing_list, &super->s_freeing_list);
319 spin_unlock(&logfs_inode_lock); 297 spin_unlock(&logfs_inode_lock);
320 generic_drop_inode(inode); 298 return generic_drop_inode(inode);
321} 299}
322 300
323static void logfs_set_ino_generation(struct super_block *sb, 301static void logfs_set_ino_generation(struct super_block *sb,
@@ -384,12 +362,21 @@ static int logfs_sync_fs(struct super_block *sb, int wait)
384 return 0; 362 return 0;
385} 363}
386 364
365static void logfs_put_super(struct super_block *sb)
366{
367 struct logfs_super *super = logfs_super(sb);
368 /* kill the meta-inodes */
369 iput(super->s_master_inode);
370 iput(super->s_segfile_inode);
371 iput(super->s_mapping_inode);
372}
373
387const struct super_operations logfs_super_operations = { 374const struct super_operations logfs_super_operations = {
388 .alloc_inode = logfs_alloc_inode, 375 .alloc_inode = logfs_alloc_inode,
389 .clear_inode = logfs_clear_inode,
390 .delete_inode = logfs_delete_inode,
391 .destroy_inode = logfs_destroy_inode, 376 .destroy_inode = logfs_destroy_inode,
377 .evict_inode = logfs_evict_inode,
392 .drop_inode = logfs_drop_inode, 378 .drop_inode = logfs_drop_inode,
379 .put_super = logfs_put_super,
393 .write_inode = logfs_write_inode, 380 .write_inode = logfs_write_inode,
394 .statfs = logfs_statfs, 381 .statfs = logfs_statfs,
395 .sync_fs = logfs_sync_fs, 382 .sync_fs = logfs_sync_fs,