linux-toradex.git/fs/read_write.c, branch v4.7

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

2016-05-18T18:46:23+00:00

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

2016-05-17T22:05:23+00:00

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()

2016-05-02T23:49:28+00:00

same as read() on regular files has, and for the same reason.

Signed-off-by: Al Viro

fs: add RWF_DSYNC aand RWF_SYNC

2016-05-01T23:58:39+00:00

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

2016-04-03T23:51:39+00:00

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

2016-03-18T20:07:38+00:00

vfs: add the RWF_HIPRI flag for preadv2/pwritev2

2016-03-04T17:20:10+00:00

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

2016-03-04T17:20:10+00:00

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

vfs: pass a flags argument to vfs_readv/vfs_writev

2016-03-04T17:20:10+00:00

This way we can set kiocb flags also from the sync read/write path for
the read_iter/write_iter operations.  For now there is no way to pass
flags to plain read/write operations as there is no real need for that,
and all flags passed are explicitly rejected for these files.

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

fs: return -EOPNOTSUPP if clone is not supported

2016-02-28T00:15:51+00:00

-EBADF is a rather confusing error if an operations is not supported,
and nfsd gets rather upset about it.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro