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authorDave Kleikamp <shaggy@austin.ibm.com>2006-05-24 07:43:38 -0500
committerDave Kleikamp <shaggy@austin.ibm.com>2006-05-24 07:43:38 -0500
commitb964638ffd59b61c13f02b81e5118a6e573d91cd (patch)
tree118ab6ba3bceab3ab39d7d22070d03af2ace6f18
parent387e2b0439026aa738a9edca15a57e5c0bcb4dfc (diff)
downloadlinux-2.6.38-lt-ux500-b964638ffd59b61c13f02b81e5118a6e573d91cd.tar.gz
JFS: Fix multiple errors in metapage_releasepage
It looks like metapage_releasepage was making in invalid assumption that the releasepage method would not be called on a dirty page. Instead of issuing a warning and releasing the metapage, it should return 0, indicating that the private data for the page cannot be released. I also realized that metapage_releasepage had the return code all wrong. If it is successful in releasing the private data, it should return 1, otherwise it needs to return 0. Lastly, there is no need to call wait_on_page_writeback, since try_to_release_page will not call us with a page in writback state. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
-rw-r--r--fs/jfs/jfs_metapage.c20
1 files changed, 5 insertions, 15 deletions
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index f28696f235c..2b220dd6b4e 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -542,7 +542,7 @@ add_failed:
static int metapage_releasepage(struct page *page, gfp_t gfp_mask)
{
struct metapage *mp;
- int busy = 0;
+ int ret = 1;
unsigned int offset;
for (offset = 0; offset < PAGE_CACHE_SIZE; offset += PSIZE) {
@@ -552,30 +552,20 @@ static int metapage_releasepage(struct page *page, gfp_t gfp_mask)
continue;
jfs_info("metapage_releasepage: mp = 0x%p", mp);
- if (mp->count || mp->nohomeok) {
+ if (mp->count || mp->nohomeok ||
+ test_bit(META_dirty, &mp->flag)) {
jfs_info("count = %ld, nohomeok = %d", mp->count,
mp->nohomeok);
- busy = 1;
+ ret = 0;
continue;
}
- wait_on_page_writeback(page);
- //WARN_ON(test_bit(META_dirty, &mp->flag));
- if (test_bit(META_dirty, &mp->flag)) {
- dump_mem("dirty mp in metapage_releasepage", mp,
- sizeof(struct metapage));
- dump_mem("page", page, sizeof(struct page));
- dump_stack();
- }
if (mp->lsn)
remove_from_logsync(mp);
remove_metapage(page, mp);
INCREMENT(mpStat.pagefree);
free_metapage(mp);
}
- if (busy)
- return -1;
-
- return 0;
+ return ret;
}
static void metapage_invalidatepage(struct page *page, unsigned long offset)