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9p: do not overwrite return code when locking fails

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If the remote locking fail, we run a local vfs unlock that should work and
return success to userland when we didn't actually lock at all.  We need
to tell the application that tried to lock that it didn't get it, not that
all went well.

Signed-off-by: Dominique Martinet <[email protected]>
Cc: Eric Van Hensbergen <[email protected]>
Cc: Ron Minnich <[email protected]>
Cc: Latchesar Ionkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Dominique Martinet 2015-11-05 18:44:21 -08:00 • committed by Linus Torvalds
commit b64787401f
1 changed files with 2 additions and 1 deletions
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3
fs/9p/vfs_file.c
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@ -231,7 +231,8 @@ out_unlock:
if (res < 0 && fl->fl_type != F_UNLCK) {
fl_type = fl->fl_type;
fl->fl_type = F_UNLCK;
res = posix_lock_file_wait(filp, fl);
/* Even if this fails we want to return the remote error */
posix_lock_file_wait(filp, fl);
fl->fl_type = fl_type;
}
out: