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author | Theodore Ts'o <tytso@mit.edu> | 2014-08-30 00:49:51 (GMT) |
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committer | Theodore Ts'o <tytso@mit.edu> | 2014-08-30 00:49:51 (GMT) |
commit | 537d8f93805ace30ce097736d3aac041931274b1 (patch) | |
tree | 9f9c7fcd90d388d0fb5cc37e0e9250b6cf35412b | |
parent | d4f03186c8986ffde34d06fe74a99aab08f7ee0b (diff) | |
download | linux-537d8f93805ace30ce097736d3aac041931274b1.tar.xz |
ext4: convert ext4_dx_find_entry() to use the ERR_PTR convention
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-rw-r--r-- | fs/ext4/namei.c | 46 |
1 files changed, 20 insertions, 26 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 90a3cdc..1421ec1 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -270,8 +270,7 @@ static int ext4_htree_next_block(struct inode *dir, __u32 hash, __u32 *start_hash); static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct qstr *d_name, - struct ext4_dir_entry_2 **res_dir, - int *err); + struct ext4_dir_entry_2 **res_dir); static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry, struct inode *inode); @@ -1258,17 +1257,13 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, goto restart; } if (is_dx(dir)) { - bh = ext4_dx_find_entry(dir, d_name, res_dir, &err); + bh = ext4_dx_find_entry(dir, d_name, res_dir); /* * On success, or if the error was file not found, * return. Otherwise, fall back to doing a search the * old fashioned way. */ - if (err == -ENOENT) - return NULL; - if (err && err != ERR_BAD_DX_DIR) - return ERR_PTR(err); - if (bh) + if (!IS_ERR(bh) || PTR_ERR(bh) != ERR_BAD_DX_DIR) return bh; dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, " "falling back\n")); @@ -1366,34 +1361,32 @@ cleanup_and_exit: } static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct qstr *d_name, - struct ext4_dir_entry_2 **res_dir, int *err) + struct ext4_dir_entry_2 **res_dir) { struct super_block * sb = dir->i_sb; struct dx_hash_info hinfo; struct dx_frame frames[2], *frame; struct buffer_head *bh; ext4_lblk_t block; - int retval; + int err = 0, retval; - if (!(frame = dx_probe(d_name, dir, &hinfo, frames, err))) - return NULL; + frame = dx_probe(d_name, dir, &hinfo, frames, &err); + if (err) + return ERR_PTR(err); do { block = dx_get_block(frame->at); bh = ext4_read_dirblock(dir, block, DIRENT); - if (IS_ERR(bh)) { - *err = PTR_ERR(bh); + if (IS_ERR(bh)) goto errout; - } + retval = search_dirblock(bh, dir, d_name, block << EXT4_BLOCK_SIZE_BITS(sb), res_dir); - if (retval == 1) { /* Success! */ - dx_release(frames); - return bh; - } + if (retval == 1) + goto success; brelse(bh); if (retval == -1) { - *err = ERR_BAD_DX_DIR; + bh = ERR_PTR(ERR_BAD_DX_DIR); goto errout; } @@ -1402,18 +1395,19 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct q frames, NULL); if (retval < 0) { ext4_warning(sb, - "error reading index page in directory #%lu", - dir->i_ino); - *err = retval; + "error %d reading index page in directory #%lu", + retval, dir->i_ino); + bh = ERR_PTR(retval); goto errout; } } while (retval == 1); - *err = -ENOENT; + bh = NULL; errout: dxtrace(printk(KERN_DEBUG "%s not found\n", d_name->name)); - dx_release (frames); - return NULL; +success: + dx_release(frames); + return bh; } static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |