Subject: + zram-propagate-error-to-user-fix.patch added to -mm tree
To: akpm@xxxxxxxxxxxxxxxxxxxx,jmarchan@xxxxxxxxxx,minchan@xxxxxxxxxx,ngupta@xxxxxxxxxx,sergey.senozhatsky@xxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 10 Mar 2014 13:16:38 -0700
The patch titled
Subject: zram-propagate-error-to-user-fix
has been added to the -mm tree. Its filename is
zram-propagate-error-to-user-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/zram-propagate-error-to-user-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/zram-propagate-error-to-user-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: zram-propagate-error-to-user-fix
don't return with the lock held, per Sergey
Cc: Jerome Marchand <jmarchan@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff -puN drivers/block/zram/zram_drv.c~zram-propagate-error-to-user-fix drivers/block/zram/zram_drv.c
--- a/drivers/block/zram/zram_drv.c~zram-propagate-error-to-user-fix
+++ a/drivers/block/zram/zram_drv.c
@@ -126,26 +126,28 @@ static ssize_t max_comp_streams_store(st
{
int num;
struct zram *zram = dev_to_zram(dev);
+ int ret;
- if (kstrtoint(buf, 0, &num))
- goto out;
+ ret = kstrtoint(buf, 0, &num);
+ if (ret < 0)
+ return ret;
if (num < 1)
- goto out;
+ return -EINVAL;
down_write(&zram->init_lock);
if (init_done(zram)) {
if (!zcomp_set_max_streams(zram->comp, num)) {
pr_info("Cannot change max compression streams\n");
- goto out_unlock;
+ ret = -EINVAL;
+ goto out;
}
}
zram->max_comp_streams = num;
- return len;
-out_unlock:
- up_write(&zram->init_lock);
+ ret = len;
out:
- return -EINVAL;
+ up_write(&zram->init_lock);
+ return ret;
}
static ssize_t comp_algorithm_show(struct device *dev,
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
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maintainers-akpm-maintenance.patch
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mm.patch
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mm-vmstat-fix-up-zone-state-accounting-fix.patch
mm-keep-page-cache-radix-tree-nodes-in-check-fix-fix.patch
mm-process_vm_accessc-mark-function-as-static-fix.patch
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pagewalk-update-page-table-walker-core-fix-end-address-calculation-in-walk_page_range-fix.patch
pagewalk-remove-argument-hmask-from-hugetlb_entry-fix-fix.patch
mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch
drop_caches-add-some-documentation-and-info-message.patch
mmnuma-reorganize-change_pmd_range-fix.patch
drivers-lguest-page_tablesc-rename-do_set_pte.patch
mm-add-debugfs-tunable-for-fault_around_order-checkpatch-fixes.patch
mm-per-thread-vma-caching.patch
mm-per-thread-vma-caching-fix-3.patch
mm-use-macros-from-compilerh-instead-of-__attribute__-fix.patch
mm-compactionc-isolate_freepages_block-small-tuneup.patch
zram-use-zcomp-compressing-backends-fix.patch
zram-return-error-valued-pointer-from-zcomp_create-fix.patch
zram-propagate-error-to-user-fix.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
include-linux-syscallsh-add-sys32_quotactl-prototype-fix.patch
sys_sysfs-add-config_sysfs_syscall-fix.patch
kernel-groupsc-remove-return-value-of-set_groups-fix.patch
ncpfs-convert-dprintk-ddprintk-to-ncp_dbg-fix.patch
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hfsplus-fix-concurrent-acess-of-alloc_blocks-fix-fix.patch
kmod-run-usermodehelpers-only-on-cpus-allowed-for-kthreadd-v2-fix.patch
kmod-run-usermodehelpers-only-on-cpus-allowed-for-kthreadd-v2-checkpatch-fixes.patch
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fault-injection-set-bounds-on-what-proc-self-make-it-fail-accepts-fix.patch
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