From: Eric Dumazet Date: Fri, 19 Oct 2007 23:47:49 +0000 (+0200) Subject: Documentation/filesystems/files.txt: remove rcuref_inc_lf() reverences X-Git-Tag: v2.6.24-rc1~124^2~24 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=94547426db2f4f2aad2f640ca074ccb1c6f7e660;p=linux-2.6-omap-h63xx.git 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 --- diff --git a/Documentation/filesystems/files.txt b/Documentation/filesystems/files.txt index 133e213ebb7..bb0142f6108 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().