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fs: use rlimit helpers

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Make sure compiler won't do weird things with limits.  E.g.  fetching them
twice may return 2 different values after writable limits are implemented.

I.e.  either use rlimit helpers added in commit 3e10e716ab ("resource:
add helpers for fetching rlimits") or ACCESS_ONCE if not applicable.

Signed-off-by: Jiri Slaby <[email protected]>
Cc: Alexander Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jiri Slaby 2010-03-05 13:42:42 -08:00 • committed by Linus Torvalds
commit d554ed895d
8 changed files with 12 additions and 12 deletions
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fs/file.c
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@ -257,7 +257,7 @@ int expand_files(struct files_struct *files, int nr)
* N.B. For clone tasks sharing a files structure, this test
* will limit the total number of files that can be opened.
*/
if (nr >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
if (nr >= rlimit(RLIMIT_NOFILE))
return -EMFILE;
/* Do we need to expand? */