diff options
| author | Dave Kleikamp <dave.kleikamp@oracle.com> | 2011-12-21 11:05:48 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-06 14:17:12 -0800 |
| commit | 200c86387cc650dbfb33c8a22ae943ed6996648a (patch) | |
| tree | c33c28aa5fbceb45cb912e76b0f53e30e291cf00 | |
| parent | 5518e7a8f7964cb79760b2ca6736e8997a6e388b (diff) | |
vfs: __read_cache_page should use gfp argument rather than GFP_KERNEL
commit e6f67b8c05f5e129e126f4409ddac6f25f58ffcb upstream.
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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | mm/filemap.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 7771871fa35..b91f3aa627f 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)) { page_cache_release(page); 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. */ |