From 94547426db2f4f2aad2f640ca074ccb1c6f7e660 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 20 Oct 2007 01:47:49 +0200 Subject: [PATCH] Documentation/filesystems/files.txt: remove rcuref_inc_lf() reverences rcuref_inc_lf() is not used anymore. Replace it by atomic_inc_not_zero() Signed-off-by: Eric Dumazet Signed-off-by: Adrian Bunk --- Documentation/filesystems/files.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/filesystems/files.txt b/Documentation/filesystems/files.txt index 133e213ebb72..bb0142f61084 100644 --- a/Documentation/filesystems/files.txt +++ b/Documentation/filesystems/files.txt @@ -76,13 +76,13 @@ the fdtable structure - 5. Handling of the file structures is special. Since the look-up of the fd (fget()/fget_light()) are lock-free, it is possible that look-up may race with the last put() operation on the - file structure. This is avoided using the rcuref APIs + file structure. This is avoided using atomic_inc_not_zero() on ->f_count : rcu_read_lock(); file = fcheck_files(files, fd); if (file) { - if (rcuref_inc_lf(&file->f_count)) + if (atomic_inc_not_zero(&file->f_count)) *fput_needed = 1; else /* Didn't get the reference, someone's freed */ @@ -92,7 +92,7 @@ the fdtable structure - .... return file; - rcuref_inc_lf() detects if refcounts is already zero or + atomic_inc_not_zero() detects if refcounts is already zero or goes to zero during increment. If it does, we fail fget()/fget_light(). -- 2.20.1