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authorSunil Mushran <sunil.mushran@oracle.com>2008-07-16 20:22:22 -0400
committerMark Fasheh <mfasheh@suse.com>2008-07-31 19:21:14 -0400
commit961cecbee6786f4b1f1b8f695e87045b583f9f49 (patch)
tree350d8604d04c594463372e3fab0cab2e953c7770 /fs/ocfs2/aops.c
parent539d8264093560b917ee3afe4c7f74e5da09d6a5 (diff)
[PATCH] ocfs2: Fix oops when racing files truncates with writes into an mmap region
This patch fixes an oops that is reproduced when one races writes to a mmap-ed region with another process truncating the file. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/aops.c')
-rw-r--r--fs/ocfs2/aops.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 1db080135c6d..506c24fb5078 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -1073,12 +1073,15 @@ static void ocfs2_write_failure(struct inode *inode,
1073 for(i = 0; i < wc->w_num_pages; i++) { 1073 for(i = 0; i < wc->w_num_pages; i++) {
1074 tmppage = wc->w_pages[i]; 1074 tmppage = wc->w_pages[i];
1075 1075
1076 if (ocfs2_should_order_data(inode)) 1076 if (page_has_buffers(tmppage)) {
1077 walk_page_buffers(wc->w_handle, page_buffers(tmppage), 1077 if (ocfs2_should_order_data(inode))
1078 from, to, NULL, 1078 walk_page_buffers(wc->w_handle,
1079 ocfs2_journal_dirty_data); 1079 page_buffers(tmppage),
1080 1080 from, to, NULL,
1081 block_commit_write(tmppage, from, to); 1081 ocfs2_journal_dirty_data);
1082
1083 block_commit_write(tmppage, from, to);
1084 }
1082 } 1085 }
1083} 1086}
1084 1087
@@ -1901,12 +1904,14 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
1901 to = PAGE_CACHE_SIZE; 1904 to = PAGE_CACHE_SIZE;
1902 } 1905 }
1903 1906
1904 if (ocfs2_should_order_data(inode)) 1907 if (page_has_buffers(tmppage)) {
1905 walk_page_buffers(wc->w_handle, page_buffers(tmppage), 1908 if (ocfs2_should_order_data(inode))
1906 from, to, NULL, 1909 walk_page_buffers(wc->w_handle,
1907 ocfs2_journal_dirty_data); 1910 page_buffers(tmppage),
1908 1911 from, to, NULL,
1909 block_commit_write(tmppage, from, to); 1912 ocfs2_journal_dirty_data);
1913 block_commit_write(tmppage, from, to);
1914 }
1910 } 1915 }
1911 1916
1912out_write_size: 1917out_write_size: