I've dropped the conversion of readpage implementations to synchronous from this patchset. I realised I'd neglected the requirement for making the sleep killable, and that turns out to be more convoluted to fix. So these patches add: - An error-path bugfix for cachefiles. - The ability for the filesystem to tell the caller of ->readpage that the read was successful and the page was not unlocked. This is a performance improvement for some scenarios that I think are rare. - Mildly improved error handling for ext4. v2: https://lore.kernel.org/linux-fsdevel/20201009143104.22673-1-willy@xxxxxxxxxxxxx/ v1: https://lore.kernel.org/linux-fsdevel/20200917151050.5363-1-willy@xxxxxxxxxxxxx/ Matthew Wilcox (Oracle) (18): cachefiles: Handle readpage error correctly swap: Call aops->readahead if appropriate fs: Add AOP_UPDATED_PAGE return value mm/filemap: Inline wait_on_page_read into its one caller 9p: Tell the VFS that readpage was synchronous afs: Tell the VFS that readpage was synchronous ceph: Tell the VFS that readpage was synchronous cifs: Tell the VFS that readpage was synchronous cramfs: Tell the VFS that readpage was synchronous ecryptfs: Tell the VFS that readpage was synchronous ext4: Tell the VFS that readpage was synchronous ext4: Return error from ext4_readpage fuse: Tell the VFS that readpage was synchronous hostfs: Tell the VFS that readpage was synchronous jffs2: Tell the VFS that readpage was synchronous ubifs: Tell the VFS that readpage was synchronous udf: Tell the VFS that readpage was synchronous vboxsf: Tell the VFS that readpage was synchronous Documentation/filesystems/locking.rst | 7 +++--- Documentation/filesystems/vfs.rst | 21 +++++++++++------ fs/9p/vfs_addr.c | 6 ++++- fs/afs/file.c | 3 ++- fs/buffer.c | 15 +++++++----- fs/cachefiles/rdwr.c | 9 ++++++++ fs/ceph/addr.c | 9 ++++---- fs/cifs/file.c | 8 +++++-- fs/cramfs/inode.c | 5 ++-- fs/ecryptfs/mmap.c | 11 +++++---- fs/ext4/inline.c | 9 +++++--- fs/ext4/readpage.c | 24 +++++++++++-------- fs/fuse/file.c | 2 ++ fs/hostfs/hostfs_kern.c | 2 ++ fs/jffs2/file.c | 6 +++-- fs/ubifs/file.c | 16 ++++++++----- fs/udf/file.c | 3 +-- fs/vboxsf/file.c | 2 ++ include/linux/fs.h | 5 ++++ mm/filemap.c | 33 +++++++++++++-------------- mm/page_io.c | 27 ++++++++++++++++++++-- mm/readahead.c | 3 ++- 22 files changed, 151 insertions(+), 75 deletions(-) -- 2.28.0
