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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2015-01-14 12:11:41 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2015-12-15 14:39:42 +0100 |
| commit | 12fdbe23b2901fa84d0ef35d53aeec112a930edf (patch) | |
| tree | f7711768c1afb3034f06095d8774aad03630e966 /man2/futex.2 | |
| parent | a9dcb4d1de35f715a1bd09c9cba5430e32893dd9 (diff) | |
| download | man-pages-12fdbe23b2901fa84d0ef35d53aeec112a930edf.tar.gz | |
futex.2: Rearrange order FUTEX_UNLOCK_PI in list of operations
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man2/futex.2')
| -rw-r--r-- | man2/futex.2 | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/man2/futex.2 b/man2/futex.2 index 1c9e98ca44..dd5b5d1dad 100644 --- a/man2/futex.2 +++ b/man2/futex.2 @@ -689,12 +689,19 @@ arguments are ignored. .\" Documentation/robust-futexes.txt, is not an error as such. However, .\" I'm not yet sure of how to describe it in the man page.) .TP -.BR FUTEX_UNLOCK_PI " (since Linux 2.6.18)" +.BR FUTEX_TRYLOCK_PI " (since Linux 2.6.18)" .\" commit c87e2837be82df479a6bae9f155c43516d2feebc -.\" FIXME to complete -[As yet undocumented] +This operation tries to acquire the futex at +.IR uaddr . +It deals with the +situation where the TID value at +.I uaddr +is 0, but the +.B FUTEX_HAS_WAITER +bit is set. +User space cannot handle this race free. .TP -.BR FUTEX_TRYLOCK_PI " (since Linux 2.6.18)" +.BR FUTEX_UNLOCK_PI " (since Linux 2.6.18)" .\" commit c87e2837be82df479a6bae9f155c43516d2feebc .\" FIXME to complete [As yet undocumented] |