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authorEric Dumazet <dada1@cosmosbay.com>2007-10-19 19:47:49 -0400
committerAdrian Bunk <bunk@kernel.org>2007-10-19 19:47:49 -0400
commit94547426db2f4f2aad2f640ca074ccb1c6f7e660 (patch)
tree102645f27b6a6275b72471b7aab3404c6814a7c7 /Documentation/filesystems/files.txt
parent6888c1ecd63a3e5e206048602b3f59b58f4ffd8f (diff)
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 <dada1@cosmosbay.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
Diffstat (limited to 'Documentation/filesystems/files.txt')
-rw-r--r--Documentation/filesystems/files.txt6
1 files 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 -
765. Handling of the file structures is special. Since the look-up 765. Handling of the file structures is special. Since the look-up
77 of the fd (fget()/fget_light()) are lock-free, it is possible 77 of the fd (fget()/fget_light()) are lock-free, it is possible
78 that look-up may race with the last put() operation on the 78 that look-up may race with the last put() operation on the
79 file structure. This is avoided using the rcuref APIs 79 file structure. This is avoided using atomic_inc_not_zero()
80 on ->f_count : 80 on ->f_count :
81 81
82 rcu_read_lock(); 82 rcu_read_lock();
83 file = fcheck_files(files, fd); 83 file = fcheck_files(files, fd);
84 if (file) { 84 if (file) {
85 if (rcuref_inc_lf(&file->f_count)) 85 if (atomic_inc_not_zero(&file->f_count))
86 *fput_needed = 1; 86 *fput_needed = 1;
87 else 87 else
88 /* Didn't get the reference, someone's freed */ 88 /* Didn't get the reference, someone's freed */
@@ -92,7 +92,7 @@ the fdtable structure -
92 .... 92 ....
93 return file; 93 return file;
94 94
95 rcuref_inc_lf() detects if refcounts is already zero or 95 atomic_inc_not_zero() detects if refcounts is already zero or
96 goes to zero during increment. If it does, we fail 96 goes to zero during increment. If it does, we fail
97 fget()/fget_light(). 97 fget()/fget_light().
98 98