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fs, epoll: add procfs fdinfo helper

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This allows us to print out eventpoll target file descriptor, events and
data, the /proc/pid/fdinfo/fd consists of

 | pos:	0
 | flags:	02
 | tfd:        5 events:       1d data: ffffffffffffffff enabled: 1

[avagin@: fix for unitialized ret variable]

Signed-off-by: Cyrill Gorcunov <[email protected]>
Acked-by: Pavel Emelyanov <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Andrey Vagin <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: Matthew Helsley <[email protected]>
Cc: "J. Bruce Fields" <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Cyrill Gorcunov 2012-12-17 16:05:02 -08:00 • committed by Linus Torvalds
commit 138d22b586
4 changed files with 50 additions and 1 deletions
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2
fs/proc/array.c
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@ -220,7 +220,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
seq_putc(m, '\n');
}
static void render_sigset_t(struct seq_file *m, const char *header,
void render_sigset_t(struct seq_file *m, const char *header,
sigset_t *set)
{
int i;