udf: fix adding entry to a directory

When adding directory entry to a directory, we have to properly increase
length of the last extent.  Handle this similarly as extending regular files -
make extents always have size multiple of block size (it will be truncated
down to proper size in udf_clear_inode()).

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index f792681..24cfa55 100644 (file)
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -289,7 +289,7 @@ struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block,
        eloc.logicalBlockNum = *block;
        eloc.partitionReferenceNum =
                                iinfo->i_location.partitionReferenceNum;
-       elen = inode->i_size;
+       elen = inode->i_sb->s_blocksize;
        iinfo->i_lenExtents = elen;
        epos.bh = NULL;
        epos.block = iinfo->i_location;

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index dacd8f4..112a5fb 100644 (file)
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -395,7 +395,6 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
                }
 
                block = dinfo->i_location.logicalBlockNum;
-
        } else {
                block = udf_get_lb_pblock(dir->i_sb, dinfo->i_location, 0);
                fibh->sbh = fibh->ebh = NULL;
@@ -474,6 +473,14 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
        }
 
 add:
+       if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+               elen = (elen + sb->s_blocksize - 1) & ~(sb->s_blocksize - 1);
+               if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+                       epos.offset -= sizeof(short_ad);
+               else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+                       epos.offset -= sizeof(long_ad);
+               udf_write_aext(dir, &epos, eloc, elen, 1);
+       }
        f_pos += nfidlen;
 
        if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB &&
@@ -491,15 +498,9 @@ add:
                if (!fibh->sbh)
                        return NULL;
                epos.block = dinfo->i_location;
-               eloc.logicalBlockNum = block;
-               eloc.partitionReferenceNum =
-                               dinfo->i_location.partitionReferenceNum;
-               elen = dir->i_sb->s_blocksize;
                epos.offset = udf_file_entry_alloc_offset(dir);
-               if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
-                       epos.offset += sizeof(short_ad);
-               else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
-                       epos.offset += sizeof(long_ad);
+               /* Load extent udf_expand_dir_adinicb() has created */
+               udf_current_aext(dir, &epos, &eloc, &elen, 1);
        }
 
        if (sb->s_blocksize - fibh->eoffset >= nfidlen) {