lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix 64KB blocksize in ext3 directories

Browse Source 
With 64KB blocksize, a directory entry can have size 64KB which does not
fit into 16 bits we have for entry lenght.  So we store 0xffff instead and
convert value when read from / written to disk.  The patch also converts
some places to use ext3_next_entry() when we are changing them anyway.

[akpm@linux-foundation.org: coding-style cleanups]
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara
2007-11-14 17:00:19 -08:00
committed by Linus Torvalds
parent dbaf4c024a
commit 7c06a8dc64
3 changed files with 70 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
fs/ext3/dir.c
View File

@@ -67,7 +67,7 @@ int ext3_check_dir_entry (const char * function, struct inode * dir,
unsigned long offset)
{
const char * error_msg = NULL;
const int rlen = le16_to_cpu(de->rec_len);
const int rlen = ext3_rec_len_from_disk(de->rec_len);
if (rlen < EXT3_DIR_REC_LEN(1))
error_msg = "rec_len is smaller than minimal";
@@ -173,10 +173,10 @@ revalidate:
* least that it is non-zero. A
* failure will be detected in the
* dirent test below. */
if (le16_to_cpu(de->rec_len) <
if (ext3_rec_len_from_disk(de->rec_len) <
EXT3_DIR_REC_LEN(1))
break;
i += le16_to_cpu(de->rec_len);
i += ext3_rec_len_from_disk(de->rec_len);
}
offset = i;
filp->f_pos = (filp->f_pos & ~(sb->s_blocksize - 1))
@@ -197,7 +197,7 @@ revalidate:
ret = stored;
goto out;
}
offset += le16_to_cpu(de->rec_len);
offset += ext3_rec_len_from_disk(de->rec_len);
if (le32_to_cpu(de->inode)) {
/* We might block in the next section
* if the data destination is
@@ -219,7 +219,7 @@ revalidate:
goto revalidate;
stored ++;
}
filp->f_pos += le16_to_cpu(de->rec_len);
filp->f_pos += ext3_rec_len_from_disk(de->rec_len);
}
offset = 0;
brelse (bh);