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authorLinus Torvalds <torvalds@linux-foundation.org>2014-07-30 17:16:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-07-30 17:16:36 -0700
commit4d0bd657d77d599307649aa03991b05e3ddef059 (patch)
treea1b028afe393695ea8ccbe4a2ef7742b94d82ef7 /mm/filemap.c
parent26bcd8b72563b4c54892c4c2a409f6656fb8ae8b (diff)
parente0198b290dcd8313bdf313a0d083033d5c01d761 (diff)
Merge branch 'akpm' (patches from Andrew Morton)
Merge fixes from Andrew Morton: "10 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: Josh has moved kexec: export free_huge_page to VMCOREINFO mm: fix filemap.c pagecache_get_page() kernel-doc warnings mm: debugfs: move rounddown_pow_of_two() out from do_fault path memcg: oom_notify use-after-free fix hwpoison: call action_result() in failure path of hwpoison_user_mappings() hwpoison: fix hugetlbfs/thp precheck in hwpoison_user_mappings() rapidio/tsi721_dma: fix failure to obtain transaction descriptor mm, thp: do not allow thp faults to avoid cpuset restrictions mm/page-writeback.c: fix divide by zero in bdi_dirty_limits()
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index dafb06f70a0..900edfaf6df 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1031,18 +1031,21 @@ EXPORT_SYMBOL(find_lock_entry);
* @mapping: the address_space to search
* @offset: the page index
* @fgp_flags: PCG flags
- * @gfp_mask: gfp mask to use if a page is to be allocated
+ * @cache_gfp_mask: gfp mask to use for the page cache data page allocation
+ * @radix_gfp_mask: gfp mask to use for radix tree node allocation
*
* Looks up the page cache slot at @mapping & @offset.
*
- * PCG flags modify how the page is returned
+ * PCG flags modify how the page is returned.
*
* FGP_ACCESSED: the page will be marked accessed
* FGP_LOCK: Page is return locked
* FGP_CREAT: If page is not present then a new page is allocated using
- * @gfp_mask and added to the page cache and the VM's LRU
- * list. The page is returned locked and with an increased
- * refcount. Otherwise, %NULL is returned.
+ * @cache_gfp_mask and added to the page cache and the VM's LRU
+ * list. If radix tree nodes are allocated during page cache
+ * insertion then @radix_gfp_mask is used. The page is returned
+ * locked and with an increased refcount. Otherwise, %NULL is
+ * returned.
*
* If FGP_LOCK or FGP_CREAT are specified then the function may sleep even
* if the GFP flags specified for FGP_CREAT are atomic.