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authorVadim Lobanov <vlobanov@speakeasy.net>2006-12-10 02:21:12 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-10 09:57:22 -0800
commitbbea9f69668a3d0cf9feba15a724cd02896f8675 (patch)
treebc58506e4daba4a04309181a5501ae4eb5424783 /security
parentf3d19c90fb117a5f080310a4592929aa8e1ad8e9 (diff)
downloadlinux-2.6.34-ux500-bbea9f69668a3d0cf9feba15a724cd02896f8675.tar.gz
[PATCH] fdtable: Make fdarray and fdsets equal in size
Currently, each fdtable supports three dynamically-sized arrays of data: the fdarray and two fdsets. The code allows the number of fds supported by the fdarray (fdtable->max_fds) to differ from the number of fds supported by each of the fdsets (fdtable->max_fdset). In practice, it is wasteful for these two sizes to differ: whenever we hit a limit on the smaller-capacity structure, we will reallocate the entire fdtable and all the dynamic arrays within it, so any delta in the memory used by the larger-capacity structure will never be touched at all. Rather than hogging this excess, we shouldn't even allocate it in the first place, and keep the capacities of the fdarray and the fdsets equal. This patch removes fdtable->max_fdset. As an added bonus, most of the supporting code becomes simpler. Signed-off-by: Vadim Lobanov <vlobanov@speakeasy.net> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
-rw-r--r--security/selinux/hooks.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 3753416eb9b..65fb5e8ea94 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1734,7 +1734,7 @@ static inline void flush_unauthorized_files(struct files_struct * files)
j++;
i = j * __NFDBITS;
fdt = files_fdtable(files);
- if (i >= fdt->max_fds || i >= fdt->max_fdset)
+ if (i >= fdt->max_fds)
break;
set = fdt->open_fds->fds_bits[j];
if (!set)