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authorTheodore Ts'o <tytso@mit.edu>2010-11-08 13:45:33 -0500
committerTheodore Ts'o <tytso@mit.edu>2010-11-08 13:45:33 -0500
commit83668e7141c7a0aa4035bde94344b81f9cf966ab (patch)
tree34d9fd52470b475d6e9d88ece8ca1ba80bf85a42 /fs/ext4/ext4.h
parentf7ad6d2e9201a6e1c9ee6530a291452eb695feb8 (diff)
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op-kernel-dev-83668e7141c7a0aa4035bde94344b81f9cf966ab.tar.gz
ext4: fix potential race when freeing ext4_io_page structures
Use an atomic_t and make sure we don't free the structure while we might still be submitting I/O for that page. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 670d134..6a5edea 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -177,7 +177,7 @@ struct mpage_da_data {
struct ext4_io_page {
struct page *p_page;
- int p_count;
+ atomic_t p_count;
};
#define MAX_IO_PAGES 128
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