path: root/mm/filemap.c
diff options
authorDave Kleikamp <dave.kleikamp@oracle.com>2011-12-21 11:05:48 -0600
committerLinus Torvalds <torvalds@linux-foundation.org>2011-12-21 17:02:46 -0800
commite6f67b8c05f5e129e126f4409ddac6f25f58ffcb (patch)
tree4df809de3016d2e84467bded094c192adaf5218a /mm/filemap.c
parent7b21a202b87b7f18587bd15ee6bdb477fed0fb43 (diff)
vfs: __read_cache_page should use gfp argument rather than GFP_KERNEL
lockdep reports a deadlock in jfs because a special inode's rw semaphore is taken recursively. The mapping's gfp mask is GFP_NOFS, but is not used when __read_cache_page() calls add_to_page_cache_lru(). Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Acked-by: Hugh Dickins <hughd@google.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index c106d3b3cc6..5f0a3c91fda 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1828,7 +1828,7 @@ repeat:
page = __page_cache_alloc(gfp | __GFP_COLD);
if (!page)
return ERR_PTR(-ENOMEM);
- err = add_to_page_cache_lru(page, mapping, index, GFP_KERNEL);
+ err = add_to_page_cache_lru(page, mapping, index, gfp);
if (unlikely(err)) {
if (err == -EEXIST)
@@ -1925,10 +1925,7 @@ static struct page *wait_on_page_read(struct page *page)
* @gfp: the page allocator flags to use if allocating
* This is the same as "read_mapping_page(mapping, index, NULL)", but with
- * any new page allocations done using the specified allocation flags. Note
- * that the Radix tree operations will still use GFP_KERNEL, so you can't
- * expect to do this atomically or anything like that - but you can pass in
- * other page requirements.
+ * any new page allocations done using the specified allocation flags.
* If the page does not get brought uptodate, return -EIO.