udf: Remove checking of existence of filename in udf_add_entry()

We don't have to check whether a directory entry already exists in a directory
when creating a new one since we've already checked that earlier by lookup and
we are holding directory i_mutex all the time.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 37 deletions

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index ac7f72779e93..e9f587201e17 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -303,11 +303,9 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
 {
         struct super_block *sb = dir->i_sb;
         struct fileIdentDesc *fi = NULL;
-        char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
+        char name[UDF_NAME_LEN];
         int namelen;
         loff_t f_pos;
-        int flen;
-        char *nameptr;
         loff_t size = udf_ext0_offset(dir) + dir->i_size;
         int nfidlen;
         uint8_t lfi;
@@ -385,26 +383,6 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
                 liu = le16_to_cpu(cfi->lengthOfImpUse);
                 lfi = cfi->lengthFileIdent;
 
-                if (fibh->sbh == fibh->ebh)
-                        nameptr = fi->fileIdent + liu;
-                else {
-                        int poffset;    /* Unpaded ending offset */
-
-                        poffset = fibh->soffset + sizeof(struct fileIdentDesc) +
-                                        liu + lfi;
-
-                        if (poffset >= lfi)
-                                nameptr = (char *)(fibh->ebh->b_data +
-                                                   poffset - lfi);
-                        else {
-                                nameptr = fname;
-                                memcpy(nameptr, fi->fileIdent + liu,
-                                        lfi - poffset);
-                                memcpy(nameptr + lfi - poffset,
-                                        fibh->ebh->b_data, poffset);
-                        }
-                }
-
                 if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
                         if (((sizeof(struct fileIdentDesc) +
                                         liu + lfi + 3) & ~3) == nfidlen) {
@@ -423,20 +401,6 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
                                 }
                         }
                 }
-
-                if (!lfi || !dentry)
-                        continue;
-
-                flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
-                if (flen && udf_match(flen, fname, dentry->d_name.len,
-                                      dentry->d_name.name)) {
-                        if (fibh->sbh != fibh->ebh)
-                                brelse(fibh->ebh);
-                        brelse(fibh->sbh);
-                        brelse(epos.bh);
-                        *err = -EEXIST;
-                        return NULL;
-                }
         }
 
 add: