afs: Return -EAGAIN, not -EREMOTEIO, when a file already locked

[ Upstream commit 0066f1b0e27556381402db3ff31f85d2a2265858 ]

When trying to get a file lock on an AFS file, the server may return
UAEAGAIN to indicate that the lock is already held.  This is currently
translated by the default path to -EREMOTEIO.

Translate it instead to -EAGAIN so that we know we can retry it.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeffrey E Altman <jaltman@auristor.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/166075761334.3533338.2591992675160918098.stgit@warthog.procyon.org.uk/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/afs/misc.c b/fs/afs/misc.c
index 1d1a8debe4723e4b0d5a69e892cd4389f07ef1c8..f1dc2162900a435d6fdf4fdd66235fe7d7a19e87 100644 (file)
--- a/fs/afs/misc.c
+++ b/fs/afs/misc.c
@@ -69,6 +69,7 @@ int afs_abort_to_error(u32 abort_code)
                /* Unified AFS error table */
        case UAEPERM:                   return -EPERM;
        case UAENOENT:                  return -ENOENT;
+       case UAEAGAIN:                  return -EAGAIN;
        case UAEACCES:                  return -EACCES;
        case UAEBUSY:                   return -EBUSY;
        case UAEEXIST:                  return -EEXIST;