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hes-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505
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From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414
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From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011
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From: merge <null@invalid>
MERGE-via-master-MERGE-via-master-hist-1232625318
master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage:
From: merge <null@invalid>
MERGE-master-patchset-edits
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Use a special error value FILE_LOCK_DEFERRED to mean that a locking
operation returned asynchronously. This is returned by
posix_lock_file() for sleeping locks to mean that the lock has been
queued on the block list, and will be woken up when it might become
available and needs to be retried (either fl_lmops->fl_notify() is
called or fl_wait is woken up).
f_op->lock() to mean either the above, or that the filesystem will
call back with fl_lmops->fl_grant() when the result of the locking
operation is known. The filesystem can do this for sleeping as well
as non-sleeping locks.
This is to make sure, that return values of -EAGAIN and -EINPROGRESS by
filesystems are not mistaken to mean an asynchronous locking.
This also makes error handling in fs/locks.c and lockd/svclock.c slightly
cleaner.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: David Teigland <teigland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The return value on writes to the plock device should be
the number of bytes written. It was returning 0 instead
when an nfs lock callback was involved.
Reported-by: Nathan Straz <nstraz@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
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Move the code that handles cluster posix locks from gfs2 into the dlm
so that it can be used by both gfs2 and ocfs2.
Signed-off-by: David Teigland <teigland@redhat.com>
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