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authorDavid S. Miller <davem@davemloft.net>2008-09-16 17:11:43 -0400
committerDavid S. Miller <davem@davemloft.net>2008-09-16 17:11:43 -0400
commit2e57572a50a4de41c6cbc879a4866a312d4cd316 (patch)
treec4f58ec96c06642c4b415b881d3f0a3b673d5b44 /fs/ntfs
parent9b2e43ae4e9609f80034dfe8de895045cac52d77 (diff)
parentf948cc6ab9e61a8e88d70ee9aafc690e6d26f92c (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
Conflicts: arch/sparc64/kernel/pci_psycho.c
Diffstat (limited to 'fs/ntfs')
-rw-r--r--fs/ntfs/namei.c89
-rw-r--r--fs/ntfs/usnjrnl.h4
2 files changed, 4 insertions, 89 deletions
diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c
index e1781c8b1650..9e8a95be7a1e 100644
--- a/fs/ntfs/namei.c
+++ b/fs/ntfs/namei.c
@@ -174,7 +174,6 @@ static struct dentry *ntfs_lookup(struct inode *dir_ino, struct dentry *dent,
174 // TODO: Consider moving this lot to a separate function! (AIA) 174 // TODO: Consider moving this lot to a separate function! (AIA)
175handle_name: 175handle_name:
176 { 176 {
177 struct dentry *real_dent, *new_dent;
178 MFT_RECORD *m; 177 MFT_RECORD *m;
179 ntfs_attr_search_ctx *ctx; 178 ntfs_attr_search_ctx *ctx;
180 ntfs_inode *ni = NTFS_I(dent_inode); 179 ntfs_inode *ni = NTFS_I(dent_inode);
@@ -255,93 +254,9 @@ handle_name:
255 } 254 }
256 nls_name.hash = full_name_hash(nls_name.name, nls_name.len); 255 nls_name.hash = full_name_hash(nls_name.name, nls_name.len);
257 256
258 /* 257 dent = d_add_ci(dent, dent_inode, &nls_name);
259 * Note: No need for dent->d_lock lock as i_mutex is held on the
260 * parent inode.
261 */
262
263 /* Does a dentry matching the nls_name exist already? */
264 real_dent = d_lookup(dent->d_parent, &nls_name);
265 /* If not, create it now. */
266 if (!real_dent) {
267 real_dent = d_alloc(dent->d_parent, &nls_name);
268 kfree(nls_name.name);
269 if (!real_dent) {
270 err = -ENOMEM;
271 goto err_out;
272 }
273 new_dent = d_splice_alias(dent_inode, real_dent);
274 if (new_dent)
275 dput(real_dent);
276 else
277 new_dent = real_dent;
278 ntfs_debug("Done. (Created new dentry.)");
279 return new_dent;
280 }
281 kfree(nls_name.name); 258 kfree(nls_name.name);
282 /* Matching dentry exists, check if it is negative. */ 259 return dent;
283 if (real_dent->d_inode) {
284 if (unlikely(real_dent->d_inode != dent_inode)) {
285 /* This can happen because bad inodes are unhashed. */
286 BUG_ON(!is_bad_inode(dent_inode));
287 BUG_ON(!is_bad_inode(real_dent->d_inode));
288 }
289 /*
290 * Already have the inode and the dentry attached, decrement
291 * the reference count to balance the ntfs_iget() we did
292 * earlier on. We found the dentry using d_lookup() so it
293 * cannot be disconnected and thus we do not need to worry
294 * about any NFS/disconnectedness issues here.
295 */
296 iput(dent_inode);
297 ntfs_debug("Done. (Already had inode and dentry.)");
298 return real_dent;
299 }
300 /*
301 * Negative dentry: instantiate it unless the inode is a directory and
302 * has a 'disconnected' dentry (i.e. IS_ROOT and DCACHE_DISCONNECTED),
303 * in which case d_move() that in place of the found dentry.
304 */
305 if (!S_ISDIR(dent_inode->i_mode)) {
306 /* Not a directory; everything is easy. */
307 d_instantiate(real_dent, dent_inode);
308 ntfs_debug("Done. (Already had negative file dentry.)");
309 return real_dent;
310 }
311 spin_lock(&dcache_lock);
312 if (list_empty(&dent_inode->i_dentry)) {
313 /*
314 * Directory without a 'disconnected' dentry; we need to do
315 * d_instantiate() by hand because it takes dcache_lock which
316 * we already hold.
317 */
318 list_add(&real_dent->d_alias, &dent_inode->i_dentry);
319 real_dent->d_inode = dent_inode;
320 spin_unlock(&dcache_lock);
321 security_d_instantiate(real_dent, dent_inode);
322 ntfs_debug("Done. (Already had negative directory dentry.)");
323 return real_dent;
324 }
325 /*
326 * Directory with a 'disconnected' dentry; get a reference to the
327 * 'disconnected' dentry.
328 */
329 new_dent = list_entry(dent_inode->i_dentry.next, struct dentry,
330 d_alias);
331 dget_locked(new_dent);
332 spin_unlock(&dcache_lock);
333 /* Do security vodoo. */
334 security_d_instantiate(real_dent, dent_inode);
335 /* Move new_dent in place of real_dent. */
336 d_move(new_dent, real_dent);
337 /* Balance the ntfs_iget() we did above. */
338 iput(dent_inode);
339 /* Throw away real_dent. */
340 dput(real_dent);
341 /* Use new_dent as the actual dentry. */
342 ntfs_debug("Done. (Already had negative, disconnected directory "
343 "dentry.)");
344 return new_dent;
345 260
346eio_err_out: 261eio_err_out:
347 ntfs_error(vol->sb, "Illegal file name attribute. Run chkdsk."); 262 ntfs_error(vol->sb, "Illegal file name attribute. Run chkdsk.");
diff --git a/fs/ntfs/usnjrnl.h b/fs/ntfs/usnjrnl.h
index 3a8af75351e8..4087fbdac327 100644
--- a/fs/ntfs/usnjrnl.h
+++ b/fs/ntfs/usnjrnl.h
@@ -113,7 +113,7 @@ typedef struct {
113 * Reason flags (32-bit). Cumulative flags describing the change(s) to the 113 * Reason flags (32-bit). Cumulative flags describing the change(s) to the
114 * file since it was last opened. I think the names speak for themselves but 114 * file since it was last opened. I think the names speak for themselves but
115 * if you disagree check out the descriptions in the Linux NTFS project NTFS 115 * if you disagree check out the descriptions in the Linux NTFS project NTFS
116 * documentation: http://linux-ntfs.sourceforge.net/ntfs/files/usnjrnl.html 116 * documentation: http://www.linux-ntfs.org/
117 */ 117 */
118enum { 118enum {
119 USN_REASON_DATA_OVERWRITE = const_cpu_to_le32(0x00000001), 119 USN_REASON_DATA_OVERWRITE = const_cpu_to_le32(0x00000001),
@@ -145,7 +145,7 @@ typedef le32 USN_REASON_FLAGS;
145 * Source info flags (32-bit). Information about the source of the change(s) 145 * Source info flags (32-bit). Information about the source of the change(s)
146 * to the file. For detailed descriptions of what these mean, see the Linux 146 * to the file. For detailed descriptions of what these mean, see the Linux
147 * NTFS project NTFS documentation: 147 * NTFS project NTFS documentation:
148 * http://linux-ntfs.sourceforge.net/ntfs/files/usnjrnl.html 148 * http://www.linux-ntfs.org/
149 */ 149 */
150enum { 150enum {
151 USN_SOURCE_DATA_MANAGEMENT = const_cpu_to_le32(0x00000001), 151 USN_SOURCE_DATA_MANAGEMENT = const_cpu_to_le32(0x00000001),