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| author | Josh Boyer <jwboyer@redhat.com> | 2012-07-25 18:40:34 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-09 19:31:39 +0400 |
| commit | 27cd8f51344dcf4799c7a092c1797402b833126a (patch) | |
| tree | 4af5fa7d852c6f73795dd0ea9508b86283fb009e /fs/exec.c | |
| parent | b6e9ffcdb09fbf28665e025aa31fda702689786c (diff) | |
| download | linux-27cd8f51344dcf4799c7a092c1797402b833126a.tar.xz | |
posix_types.h: Cleanup stale __NFDBITS and related definitions
commit 8ded2bbc1845e19c771eb55209aab166ef011243 upstream.
Recently, glibc made a change to suppress sign-conversion warnings in
FD_SET (glibc commit ceb9e56b3d1). This uncovered an issue with the
kernel's definition of __NFDBITS if applications #include
<linux/types.h> after including <sys/select.h>. A build failure would
be seen when passing the -Werror=sign-compare and -D_FORTIFY_SOURCE=2
flags to gcc.
It was suggested that the kernel should either match the glibc
definition of __NFDBITS or remove that entirely. The current in-kernel
uses of __NFDBITS can be replaced with BITS_PER_LONG, and there are no
uses of the related __FDELT and __FDMASK defines. Given that, we'll
continue the cleanup that was started with commit 8b3d1cda4f5f
("posix_types: Remove fd_set macros") and drop the remaining unused
macros.
Additionally, linux/time.h has similar macros defined that expand to
nothing so we'll remove those at the same time.
Reported-by: Jeff Law <law@redhat.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
[ .. and fix up whitespace as per akpm ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c index 29e5f840544f..126e01cb2434 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1024,7 +1024,7 @@ static void flush_old_files(struct files_struct * files) unsigned long set, i; j++; - i = j * __NFDBITS; + i = j * BITS_PER_LONG; fdt = files_fdtable(files); if (i >= fdt->max_fds) break; |