diff options
| -rw-r--r-- | fs/f2fs/compress.c | 7 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 8 |
2 files changed, 15 insertions, 0 deletions
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index dcc9f807a647..b3ecf7d4d6d8 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -49,6 +49,13 @@ bool f2fs_is_compressed_page(struct page *page) return false; if (IS_ATOMIC_WRITTEN_PAGE(page) || IS_DUMMY_WRITTEN_PAGE(page)) return false; + /* + * page->private may be set with pid. + * pid_max is enough to check if it is traced. + */ + if (IS_IO_TRACED_PAGE(page)) + return false; + f2fs_bug_on(F2FS_M_SB(page->mapping), *((u32 *)page_private(page)) != F2FS_COMPRESSED_PAGE_MAGIC); return true; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 70565d81320b..874b793ab00e 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1313,6 +1313,14 @@ enum fsync_mode { #define IS_DUMMY_WRITTEN_PAGE(page) \ (page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE) +#ifdef CONFIG_F2FS_IO_TRACE +#define IS_IO_TRACED_PAGE(page) \ + (page_private(page) > 0 && \ + page_private(page) < (unsigned long)PID_MAX_LIMIT) +#else +#define IS_IO_TRACED_PAGE(page) (0) +#endif + #ifdef CONFIG_FS_ENCRYPTION #define DUMMY_ENCRYPTION_ENABLED(sbi) \ (unlikely(F2FS_OPTION(sbi).dummy_enc_ctx.ctx != NULL)) |