9p fid refcount: cleanup p9_fid_put calls

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Simplify p9_fid_put cleanup path in many 9p functions since the function
is noop on null or error fids.

Also make the *_add_fid() helpers "steal" the fid by nulling its
pointer, so put after them will be noop.

This should lead to no change of behaviour

Link: https://lkml.kernel.org/r/20220612085330.1451496-7-asmadeus@codewreck.org
Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

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This commit is contained in:

Dominique Martinet 2022-06-12 16:05:39 +09:00 • committed by Dominique Martinet

parent 286c171b86

commit dafbe68973

6 changed files with 64 additions and 90 deletions

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24

fs/9p/fid.c

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4

fs/9p/fid.h

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5

fs/9p/vfs_file.c

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61

fs/9p/vfs_inode.c

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58

fs/9p/vfs_inode_dotl.c

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2

fs/9p/vfs_super.c

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