lkml.org 
[lkml]   [2006]   [Jun]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 1/5]: ufs: missed brelse and wrong baseblk
This patch fixes two bugs, which introduced by previous
patches:
1)Missed "brelse"
2)Sometimes "baseblk" may be wrongly calculated, if
i_size is equal to zero, which lead infinite cycle
in "mpage_writepages".

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>

---

Index: linux-2.6.17-rc6-mm2/fs/ufs/inode.c
===================================================================
--- linux-2.6.17-rc6-mm2.orig/fs/ufs/inode.c
+++ linux-2.6.17-rc6-mm2/fs/ufs/inode.c
@@ -175,6 +175,7 @@ ufs_clear_frags(struct inode *inode, sec
for (++beg; beg < end; ++beg) {
bh = sb_getblk(inode->i_sb, beg);
ufs_clear_frag(inode, bh);
+ brelse(bh);
}
return res;
}
Index: linux-2.6.17-rc6-mm2/fs/ufs/balloc.c
===================================================================
--- linux-2.6.17-rc6-mm2.orig/fs/ufs/balloc.c
+++ linux-2.6.17-rc6-mm2/fs/ufs/balloc.c
@@ -269,20 +269,17 @@ out:
* We can come here from ufs_writepage or ufs_prepare_write,
* locked_page is argument of these functions, so we already lock it.
*/
-static void ufs_change_blocknr(struct inode *inode, unsigned int count,
- unsigned int oldb, unsigned int newb,
- struct page *locked_page)
+static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk,
+ unsigned int count, unsigned int oldb,
+ unsigned int newb, struct page *locked_page)
{
unsigned int blk_per_page = 1 << (PAGE_CACHE_SHIFT - inode->i_blkbits);
- sector_t baseblk;
struct address_space *mapping = inode->i_mapping;
pgoff_t index, cur_index = locked_page->index;
unsigned int i, j;
struct page *page;
struct buffer_head *head, *bh;

- baseblk = ((i_size_read(inode) - 1) >> inode->i_blkbits) + 1 - count;
-
UFSD("ENTER, ino %lu, count %u, oldb %u, newb %u\n",
inode->i_ino, count, oldb, newb);

@@ -439,7 +436,8 @@ unsigned ufs_new_fragments(struct inode
}
result = ufs_alloc_fragments (inode, cgno, goal, request, err);
if (result) {
- ufs_change_blocknr(inode, oldcount, tmp, result, locked_page);
+ ufs_change_blocknr(inode, fragment - oldcount, oldcount, tmp,
+ result, locked_page);

*p = cpu_to_fs32(sb, result);
*err = 0;
--
/Evgeniy

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-06-17 12:11    [W:0.071 / U:2.256 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site