diff --git a/debian/changelog b/debian/changelog index ebf4da4df..fe5a1c9b0 100644 --- a/debian/changelog +++ b/debian/changelog @@ -20,6 +20,7 @@ linux-2.6 (3.2.12-1) UNRELEASED; urgency=low * [s390] Ignore arch_pick_mmap_layout version change; it should not be needed by modules (fixes FTBFS) * [x86] Disable POHMELFS; this version is obsolete + * epoll: Don't limit non-nested epoll paths [ Jonathan Nieder ] * [x86] Enable RTS5139 as module (Closes: #663912) diff --git a/debian/patches/bugfix/all/Don-t-limit-non-nested-epoll-paths.patch b/debian/patches/bugfix/all/Don-t-limit-non-nested-epoll-paths.patch new file mode 100644 index 000000000..a30836e00 --- /dev/null +++ b/debian/patches/bugfix/all/Don-t-limit-non-nested-epoll-paths.patch @@ -0,0 +1,42 @@ +From: Jason Baron +Date: Fri, 16 Mar 2012 16:34:03 -0400 +Subject: [PATCH] Don't limit non-nested epoll paths + +commit 93dc6107a76daed81c07f50215fa6ae77691634f upstream. + +Commit 28d82dc1c4ed ("epoll: limit paths") that I did to limit the +number of possible wakeup paths in epoll is causing a few applications +to longer work (dovecot for one). + +The original patch is really about limiting the amount of epoll nesting +(since epoll fds can be attached to other fds). Thus, we probably can +allow an unlimited number of paths of depth 1. My current patch limits +it at 1000. And enforce the limits on paths that have a greater depth. + +This is captured in: https://bugzilla.redhat.com/show_bug.cgi?id=681578 + +Signed-off-by: Jason Baron +Cc: Andrew Morton +Signed-off-by: Linus Torvalds +--- + fs/eventpoll.c | 4 ++++ + 1 files changed, 4 insertions(+), 0 deletions(-) + +diff --git a/fs/eventpoll.c b/fs/eventpoll.c +index ea54cde..4d9d3a4 100644 +--- a/fs/eventpoll.c ++++ b/fs/eventpoll.c +@@ -988,6 +988,10 @@ static int path_count[PATH_ARR_SIZE]; + + static int path_count_inc(int nests) + { ++ /* Allow an arbitrary number of depth 1 paths */ ++ if (nests == 0) ++ return 0; ++ + if (++path_count[nests] > path_limits[nests]) + return -1; + return 0; +-- +1.7.9.1 + diff --git a/debian/patches/series/base b/debian/patches/series/base index 702df7423..d136c153a 100644 --- a/debian/patches/series/base +++ b/debian/patches/series/base @@ -81,3 +81,4 @@ + features/all/fs-hardlink-creation-restrictions.patch + features/all/fs-hardlink-creation-restrictions-fix.patch + features/all/fs-hardlink-creation-restriction-cleanup.patch ++ bugfix/all/Don-t-limit-non-nested-epoll-paths.patch