xfs: take the ilock shared if possible in xfs_file_iomap_begin

We always just read the extent first, and will later lock exlusively after first dropping the lock in case we actually allocate blocks. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
Age	Commit message (Expand)	Author	Files	Lines
2013-06-15	curve: curve25519_encode/curve25519_decode: simplify crypto transforms	Daniel Borkmann	1	-0/+4
2013-06-11	curve: move selftest to own file	Daniel Borkmann	1	-0/+4
2013-06-04	keypair: Add routines to generate and verify a keypair	Daniel Borkmann	1	-0/+1
2013-06-04	crypto: add crypto header with includes and defines	Daniel Borkmann	1	-0/+19