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authorChris Mason <mason@suse.com>2006-02-01 03:06:49 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-01 08:53:26 -0800
commite0e851cf30f1a9bd2e2a7624e9810378d6a2b072 (patch)
treea8cf33d9b22594fb5c1094bd8b15f2f315b53f2d /fs/reiserfs/inode.c
parentfc5cd582e9c934ddaf6f310179488932cd154794 (diff)
downloadop-kernel-dev-e0e851cf30f1a9bd2e2a7624e9810378d6a2b072.zip
op-kernel-dev-e0e851cf30f1a9bd2e2a7624e9810378d6a2b072.tar.gz
[PATCH] reiserfs: reiserfs hang and performance fix for data=journal mode
In data=journal mode, reiserfs writepage needs to make sure not to trigger transactions while being run under PF_MEMALLOC. This patch makes sure to redirty the page instead of forcing a transaction start in this case. Also, calling filemap_fdata* in order to trigger io on the block device can cause lock inversions on the page lock. Instead, do simple batching from flush_commit_list. Signed-off-by: Chris Mason <mason@suse.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/reiserfs/inode.c')
-rw-r--r--fs/reiserfs/inode.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 60e2f23..b33d67b 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -2363,6 +2363,13 @@ static int reiserfs_write_full_page(struct page *page,
int bh_per_page = PAGE_CACHE_SIZE / s->s_blocksize;
th.t_trans_id = 0;
+ /* no logging allowed when nonblocking or from PF_MEMALLOC */
+ if (checked && (current->flags & PF_MEMALLOC)) {
+ redirty_page_for_writepage(wbc, page);
+ unlock_page(page);
+ return 0;
+ }
+
/* The page dirty bit is cleared before writepage is called, which
* means we have to tell create_empty_buffers to make dirty buffers
* The page really should be up to date at this point, so tossing
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