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author | Alex Shi <alex.shi@linaro.org> | 2016-07-21 13:58:19 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2016-07-21 13:58:19 +0800 |
commit | 74b60e9f6f938d0cd4c7a71e583aee3cc6c5fbba (patch) | |
tree | 15cbca70f3f6d7e10da7d82154a78e6ca35dca8c /Documentation/sysctl/fs.txt | |
parent | f24f1475658431d60bcd4e6e5de951ba1663dd43 (diff) | |
parent | 1d508e233d21a7848cf54d7d03b40dac2d9ea873 (diff) |
Merge branch 'linux-linaro-lsk-v4.1' into linux-linaro-lsk-v4.1-rtlsk-v4.1-16.07-rt
Conflicts:
mm/swap.c
Diffstat (limited to 'Documentation/sysctl/fs.txt')
-rw-r--r-- | Documentation/sysctl/fs.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/sysctl/fs.txt b/Documentation/sysctl/fs.txt index 88152f214f48..302b5ed616a6 100644 --- a/Documentation/sysctl/fs.txt +++ b/Documentation/sysctl/fs.txt @@ -32,6 +32,8 @@ Currently, these files are in /proc/sys/fs: - nr_open - overflowuid - overflowgid +- pipe-user-pages-hard +- pipe-user-pages-soft - protected_hardlinks - protected_symlinks - suid_dumpable @@ -159,6 +161,27 @@ The default is 65534. ============================================================== +pipe-user-pages-hard: + +Maximum total number of pages a non-privileged user may allocate for pipes. +Once this limit is reached, no new pipes may be allocated until usage goes +below the limit again. When set to 0, no limit is applied, which is the default +setting. + +============================================================== + +pipe-user-pages-soft: + +Maximum total number of pages a non-privileged user may allocate for pipes +before the pipe size gets limited to a single page. Once this limit is reached, +new pipes will be limited to a single page in size for this user in order to +limit total memory usage, and trying to increase them using fcntl() will be +denied until usage goes below the limit again. The default value allows to +allocate up to 1024 pipes at their default size. When set to 0, no limit is +applied. + +============================================================== + protected_hardlinks: A long-standing class of security issues is the hardlink-based |