diff options
Diffstat (limited to 'fs/gfs2/dir.c')
-rw-r--r-- | fs/gfs2/dir.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 8295c5b5d4a9..6b48d7c268b2 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c | |||
@@ -392,7 +392,7 @@ static int gfs2_dirent_find_space(const struct gfs2_dirent *dent, | |||
392 | unsigned totlen = be16_to_cpu(dent->de_rec_len); | 392 | unsigned totlen = be16_to_cpu(dent->de_rec_len); |
393 | 393 | ||
394 | if (gfs2_dirent_sentinel(dent)) | 394 | if (gfs2_dirent_sentinel(dent)) |
395 | actual = GFS2_DIRENT_SIZE(0); | 395 | actual = 0; |
396 | if (totlen - actual >= required) | 396 | if (totlen - actual >= required) |
397 | return 1; | 397 | return 1; |
398 | return 0; | 398 | return 0; |
@@ -1231,6 +1231,25 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset, | |||
1231 | return 0; | 1231 | return 0; |
1232 | } | 1232 | } |
1233 | 1233 | ||
1234 | static void *gfs2_alloc_sort_buffer(unsigned size) | ||
1235 | { | ||
1236 | void *ptr = NULL; | ||
1237 | |||
1238 | if (size < KMALLOC_MAX_SIZE) | ||
1239 | ptr = kmalloc(size, GFP_NOFS | __GFP_NOWARN); | ||
1240 | if (!ptr) | ||
1241 | ptr = __vmalloc(size, GFP_NOFS, PAGE_KERNEL); | ||
1242 | return ptr; | ||
1243 | } | ||
1244 | |||
1245 | static void gfs2_free_sort_buffer(void *ptr) | ||
1246 | { | ||
1247 | if (is_vmalloc_addr(ptr)) | ||
1248 | vfree(ptr); | ||
1249 | else | ||
1250 | kfree(ptr); | ||
1251 | } | ||
1252 | |||
1234 | static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | 1253 | static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, |
1235 | filldir_t filldir, int *copied, unsigned *depth, | 1254 | filldir_t filldir, int *copied, unsigned *depth, |
1236 | u64 leaf_no) | 1255 | u64 leaf_no) |
@@ -1271,7 +1290,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | |||
1271 | * 99 is the maximum number of entries that can fit in a single | 1290 | * 99 is the maximum number of entries that can fit in a single |
1272 | * leaf block. | 1291 | * leaf block. |
1273 | */ | 1292 | */ |
1274 | larr = vmalloc((leaves + entries + 99) * sizeof(void *)); | 1293 | larr = gfs2_alloc_sort_buffer((leaves + entries + 99) * sizeof(void *)); |
1275 | if (!larr) | 1294 | if (!larr) |
1276 | goto out; | 1295 | goto out; |
1277 | darr = (const struct gfs2_dirent **)(larr + leaves); | 1296 | darr = (const struct gfs2_dirent **)(larr + leaves); |
@@ -1282,7 +1301,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | |||
1282 | do { | 1301 | do { |
1283 | error = get_leaf(ip, lfn, &bh); | 1302 | error = get_leaf(ip, lfn, &bh); |
1284 | if (error) | 1303 | if (error) |
1285 | goto out_kfree; | 1304 | goto out_free; |
1286 | lf = (struct gfs2_leaf *)bh->b_data; | 1305 | lf = (struct gfs2_leaf *)bh->b_data; |
1287 | lfn = be64_to_cpu(lf->lf_next); | 1306 | lfn = be64_to_cpu(lf->lf_next); |
1288 | if (lf->lf_entries) { | 1307 | if (lf->lf_entries) { |
@@ -1291,7 +1310,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | |||
1291 | gfs2_dirent_gather, NULL, &g); | 1310 | gfs2_dirent_gather, NULL, &g); |
1292 | error = PTR_ERR(dent); | 1311 | error = PTR_ERR(dent); |
1293 | if (IS_ERR(dent)) | 1312 | if (IS_ERR(dent)) |
1294 | goto out_kfree; | 1313 | goto out_free; |
1295 | if (entries2 != g.offset) { | 1314 | if (entries2 != g.offset) { |
1296 | fs_warn(sdp, "Number of entries corrupt in dir " | 1315 | fs_warn(sdp, "Number of entries corrupt in dir " |
1297 | "leaf %llu, entries2 (%u) != " | 1316 | "leaf %llu, entries2 (%u) != " |
@@ -1300,7 +1319,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | |||
1300 | entries2, g.offset); | 1319 | entries2, g.offset); |
1301 | 1320 | ||
1302 | error = -EIO; | 1321 | error = -EIO; |
1303 | goto out_kfree; | 1322 | goto out_free; |
1304 | } | 1323 | } |
1305 | error = 0; | 1324 | error = 0; |
1306 | larr[leaf++] = bh; | 1325 | larr[leaf++] = bh; |
@@ -1312,10 +1331,10 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, | |||
1312 | BUG_ON(entries2 != entries); | 1331 | BUG_ON(entries2 != entries); |
1313 | error = do_filldir_main(ip, offset, opaque, filldir, darr, | 1332 | error = do_filldir_main(ip, offset, opaque, filldir, darr, |
1314 | entries, copied); | 1333 | entries, copied); |
1315 | out_kfree: | 1334 | out_free: |
1316 | for(i = 0; i < leaf; i++) | 1335 | for(i = 0; i < leaf; i++) |
1317 | brelse(larr[i]); | 1336 | brelse(larr[i]); |
1318 | vfree(larr); | 1337 | gfs2_free_sort_buffer(larr); |
1319 | out: | 1338 | out: |
1320 | return error; | 1339 | return error; |
1321 | } | 1340 | } |