user/sven/linux.git/fs/read_write.c, branch v4.9.24

iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector()

2016-10-15T00:00:34Z

Both import_iovec() and rw_copy_check_uvector() take an array (typically small and on-stack) which is used to hold an iovec array copy from userspace. This is to avoid an expensive memory allocation in the fast path (i.e. few iovec elements). The caller may have to check whether these functions actually used the provided buffer or allocated a new one -- but this differs between the too. Let's just add a kernel doc to clarify what the semantics are for each function. Signed-off-by: Vegard Nossum Signed-off-by: Al Viro

x86/syscalls: Add compat_sys_preadv64v2/compat_sys_pwritev64v2

2016-07-15T08:30:26Z

Don't use the same syscall numbers for 2 different syscalls: 534 x32 preadv compat_sys_preadv64 535 x32 pwritev compat_sys_pwritev64 534 x32 preadv2 compat_sys_preadv2 535 x32 pwritev2 compat_sys_pwritev2 Add compat_sys_preadv64v2() and compat_sys_pwritev64v2() so that 64-bit offset is passed in one 64-bit register on x32, similar to compat_sys_preadv64() and compat_sys_pwritev64(). Signed-off-by: H.J. Lu Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Christoph Hellwig Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/CAMe9rOovCMf-RQfx_n1U_Tu_DX1BYkjtFr%3DQ4-_PFVSj9BCzUA@mail.gmail.com Signed-off-by: Ingo Molnar

Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-05-18T18:46:23Z

Pull iov_iter cleanups from Al Viro. * 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fold checks into iterate_and_advance() rw_verify_area(): saner calling conventions aio: remove a pointless assignment

Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-05-17T22:05:23Z

Pull vfs cleanups from Al Viro: "More cleanups from Christoph" * 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: nfsd: use RWF_SYNC fs: add RWF_DSYNC aand RWF_SYNC ceph: use generic_write_sync fs: simplify the generic_write_sync prototype fs: add IOCB_SYNC and IOCB_DSYNC direct-io: remove the offset argument to dio_complete direct-io: eliminate the offset argument to ->direct_IO xfs: eliminate the pos variable in xfs_file_dio_aio_write filemap: remove the pos argument to generic_file_direct_write filemap: remove pos variables in generic_file_read_iter

give readdir(2)/getdents(2)/etc. uniform exclusion with lseek()

2016-05-02T23:49:28Z

same as read() on regular files has, and for the same reason. Signed-off-by: Al Viro

fs: add RWF_DSYNC aand RWF_SYNC

2016-05-01T23:58:39Z

This is the per-I/O equivalent of O_DSYNC and O_SYNC, and very useful for all kinds of file servers and storage targets. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro

rw_verify_area(): saner calling conventions

2016-04-03T23:51:39Z

Lift length capping into the few callers that care about it. Most of them treat all non-negatives as "success" and ignore the capped value, and with good reasons. Make rw_verify_area() return 0 on success. Signed-off-by: Al Viro

Merge branches 'work.lookups', 'work.misc' and 'work.preadv2' into for-next

2016-03-18T20:07:38Z

vfs: add the RWF_HIPRI flag for preadv2/pwritev2

2016-03-04T17:20:10Z

This adds a flag that tells the file system that this is a high priority request for which it's worth to poll the hardware. The flag is purely advisory and can be ignored if not supported. Signed-off-by: Christoph Hellwig Reviewed-by: Stephen Bates Tested-by: Stephen Bates Acked-by: Jeff Moyer Signed-off-by: Al Viro

vfs: vfs: Define new syscalls preadv2,pwritev2

2016-03-04T17:20:10Z

New syscalls that take an flag argument. No flags are added yet in this patch. Signed-off-by: Milosz Tanski [hch: rebased on top of my kiocb changes] Signed-off-by: Christoph Hellwig Reviewed-by: Stephen Bates Tested-by: Stephen Bates Acked-by: Jeff Moyer Signed-off-by: Al Viro