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authorJaegeuk Kim <jaegeuk@kernel.org>2015-01-30 22:39:08 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2015-02-12 04:04:42 +0300
commitf68daeebba5a697f31f64c07b8693fa678981819 (patch)
tree4bb5e72c52204887e0c219f4240c775d2251191a /fs/f2fs
parent081d78c2fc4ab2fef4cdf1100dd22155c73f8657 (diff)
downloadlinux-f68daeebba5a697f31f64c07b8693fa678981819.tar.xz
f2fs: keep PagePrivate during releasepage
If PagePrivate is removed by releasepage, f2fs loses counting dirty pages. e.g., try_to_release_page will not release page when the page is dirty, but our releasepage removes PagePrivate. [<ffffffff81188d75>] try_to_release_page+0x35/0x50 [<ffffffff811996f9>] invalidate_inode_pages2_range+0x2f9/0x3b0 [<ffffffffa02a7f54>] ? truncate_blocks+0x384/0x4d0 [f2fs] [<ffffffffa02b7583>] ? f2fs_direct_IO+0x283/0x290 [f2fs] [<ffffffffa02b7fb0>] ? get_data_block_fiemap+0x20/0x20 [f2fs] [<ffffffff8118aa53>] generic_file_direct_write+0x163/0x170 [<ffffffff8118ad06>] __generic_file_write_iter+0x2a6/0x350 [<ffffffff8118adef>] generic_file_write_iter+0x3f/0xb0 [<ffffffff81203081>] new_sync_write+0x81/0xb0 [<ffffffff81203837>] vfs_write+0xb7/0x1f0 [<ffffffff81204459>] SyS_write+0x49/0xb0 [<ffffffff817c286d>] system_call_fastpath+0x16/0x1b Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/checkpoint.c4
-rw-r--r--fs/f2fs/data.c4
-rw-r--r--fs/f2fs/node.c4
3 files changed, 12 insertions, 0 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index f7cdcad31943..470fa58606b2 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -321,6 +321,10 @@ static void f2fs_invalidate_meta_page(struct page *page, unsigned int offset,
static int f2fs_release_meta_page(struct page *page, gfp_t wait)
{
+ /* If this is dirty page, keep PagePrivate */
+ if (PageDirty(page))
+ return 0;
+
ClearPagePrivate(page);
return 1;
}
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 6d9e6e4ce439..27dc3fd9fb60 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1130,6 +1130,10 @@ static void f2fs_invalidate_data_page(struct page *page, unsigned int offset,
static int f2fs_release_data_page(struct page *page, gfp_t wait)
{
+ /* If this is dirty page, keep PagePrivate */
+ if (PageDirty(page))
+ return 0;
+
ClearPagePrivate(page);
return 1;
}
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 05e6faa71cff..9feda386ed80 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1381,6 +1381,10 @@ static void f2fs_invalidate_node_page(struct page *page, unsigned int offset,
static int f2fs_release_node_page(struct page *page, gfp_t wait)
{
+ /* If this is dirty page, keep PagePrivate */
+ if (PageDirty(page))
+ return 0;
+
ClearPagePrivate(page);
return 1;
}