diff options
author | Gary S. Robertson <gary.robertson@linaro.org> | 2015-11-18 16:00:23 -0600 |
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committer | Gary S. Robertson <gary.robertson@linaro.org> | 2015-11-18 16:00:23 -0600 |
commit | fe7e08f8621d68222f1c65599d8c8d10f0cf5164 (patch) | |
tree | 78b986dce0ca910245ec379c9725033b0b25fddd /block/blk-mq-sysfs.c | |
parent | 701f68f192e35dfc22c6a456c8a60fb4e9ff7d02 (diff) | |
parent | 53c3c13396c2a8ee4fd9e83141b3e2b22223e590 (diff) |
Merge tag 'lsk-v4.1-15.10' of http://git.linaro.org/kernel/linux-linaro-stable into linux-linaro-lng-v4.1linux-lng-4.1.10-2015.11
LSK 15.10 v4.1
Signed-off-by: Gary S. Robertson <gary.robertson@linaro.org>
Conflicts:
linaro/configs/linaro-base.conf
Diffstat (limited to 'block/blk-mq-sysfs.c')
-rw-r--r-- | block/blk-mq-sysfs.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index b79685e06b70..279c5d674edf 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -141,15 +141,26 @@ static ssize_t blk_mq_sysfs_completed_show(struct blk_mq_ctx *ctx, char *page) static ssize_t sysfs_list_show(char *page, struct list_head *list, char *msg) { - char *start_page = page; struct request *rq; + int len = snprintf(page, PAGE_SIZE - 1, "%s:\n", msg); + + list_for_each_entry(rq, list, queuelist) { + const int rq_len = 2 * sizeof(rq) + 2; + + /* if the output will be truncated */ + if (PAGE_SIZE - 1 < len + rq_len) { + /* backspacing if it can't hold '\t...\n' */ + if (PAGE_SIZE - 1 < len + 5) + len -= rq_len; + len += snprintf(page + len, PAGE_SIZE - 1 - len, + "\t...\n"); + break; + } + len += snprintf(page + len, PAGE_SIZE - 1 - len, + "\t%p\n", rq); + } - page += sprintf(page, "%s:\n", msg); - - list_for_each_entry(rq, list, queuelist) - page += sprintf(page, "\t%p\n", rq); - - return page - start_page; + return len; } static ssize_t blk_mq_sysfs_rq_list_show(struct blk_mq_ctx *ctx, char *page) |