As you know, VFS layer has introduced non-block aio flag IOCB_NOWAIT, which informs kernel to bail out if an AIO request will block for reasons such as file allocations, or a writeback triggered, or would block while allocating requests while performing direct I/O. Subsequent, pwritev2/preadv2 also can leverage this part kernel code. So far, ext4/xfs/btrfs have supported this feature, I'd like to add the related code for ocfs2 file system.
Gang He (3): ocfs2: add ocfs2_try_rw_lock and ocfs2_try_inode_lock ocfs2: add ocfs2_overwrite_io function ocfs2: nowait aio support fs/ocfs2/dir.c | 2 +- fs/ocfs2/dlmglue.c | 42 ++++++++++++++++++++++++---- fs/ocfs2/dlmglue.h | 6 +++- fs/ocfs2/extent_map.c | 67 +++++++++++++++++++++++++++++++++++++++++++++ fs/ocfs2/extent_map.h | 3 ++ fs/ocfs2/file.c | 74 +++++++++++++++++++++++++++++++++++++------------- fs/ocfs2/mmap.c | 2 +- fs/ocfs2/ocfs2_trace.h | 10 ++++--- 8 files changed, 175 insertions(+), 31 deletions(-) -- 1.8.5.6 _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel
