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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-04 13:29:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-04 13:29:38 -0700
commitbd932ae1bd655979d0d765108721951051f0837d (patch)
treeec8ba10a8f6b02770a81587eb63f0560d19bd782 /kernel
parent150a8dcf109f68f322bf112c7604f2d950303f00 (diff)
parent4fe56e80825b47083100b2a98843df98fc7d4f07 (diff)
downloadlinux-linaro-stable-bd932ae1bd655979d0d765108721951051f0837d.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second round of VFS updates from Al Viro: "Assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: xtensa simdisk: fix braino in "xtensa simdisk: switch to proc_create_data()" hostfs: use kmalloc instead of kzalloc hostfs: move HOSTFS_SUPER_MAGIC to <linux/magic.h> hostfs: remove "will unlock" comment vfs: use list_move instead of list_del/list_add proc_devtree: Replace include linux/module.h with linux/export.h create_mnt_ns: unidiomatic use of list_add() fs: remove dentry_lru_prune() Removed unused typedef to avoid "unused local typedef" warnings. kill fs/read_write.h fs: Fix hang with BSD accounting on frozen filesystem sun3_scsi: add ->show_info() nubus: Kill nubus_proc_detach_device() more mode_t whack-a-mole... do_coredump(): don't wait for thaw if coredump has already been interrupted do_mount(): fix a leak introduced in 3.9 ("mount: consolidate permission checks")
Diffstat (limited to 'kernel')
-rw-r--r--kernel/acct.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/acct.c b/kernel/acct.c
index 85389fe2abd0..8d6e145138bb 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -540,10 +540,15 @@ static void do_acct_process(struct bsd_acct_struct *acct,
ac.ac_swaps = encode_comp_t(0);
/*
+ * Get freeze protection. If the fs is frozen, just skip the write
+ * as we could deadlock the system otherwise.
+ */
+ if (!file_start_write_trylock(file))
+ goto out;
+ /*
* Kernel segment override to datasegment and write it
* to the accounting file.
*/
- file_start_write(file);
fs = get_fs();
set_fs(KERNEL_DS);
/*