diff options
Diffstat (limited to 'lib/errseq.c')
-rw-r--r-- | lib/errseq.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/lib/errseq.c b/lib/errseq.c index 841fa24e6e00..7b900c2a277a 100644 --- a/lib/errseq.c +++ b/lib/errseq.c | |||
@@ -41,23 +41,20 @@ | |||
41 | #define ERRSEQ_CTR_INC (1 << (ERRSEQ_SHIFT + 1)) | 41 | #define ERRSEQ_CTR_INC (1 << (ERRSEQ_SHIFT + 1)) |
42 | 42 | ||
43 | /** | 43 | /** |
44 | * __errseq_set - set a errseq_t for later reporting | 44 | * errseq_set - set a errseq_t for later reporting |
45 | * @eseq: errseq_t field that should be set | 45 | * @eseq: errseq_t field that should be set |
46 | * @err: error to set | 46 | * @err: error to set (must be between -1 and -MAX_ERRNO) |
47 | * | 47 | * |
48 | * This function sets the error in *eseq, and increments the sequence counter | 48 | * This function sets the error in *eseq, and increments the sequence counter |
49 | * if the last sequence was sampled at some point in the past. | 49 | * if the last sequence was sampled at some point in the past. |
50 | * | 50 | * |
51 | * Any error set will always overwrite an existing error. | 51 | * Any error set will always overwrite an existing error. |
52 | * | 52 | * |
53 | * Most callers will want to use the errseq_set inline wrapper to efficiently | 53 | * We do return the latest value here, primarily for debugging purposes. The |
54 | * handle the common case where err is 0. | 54 | * return value should not be used as a previously sampled value in later calls |
55 | * | 55 | * as it will not have the SEEN flag set. |
56 | * We do return an errseq_t here, primarily for debugging purposes. The return | ||
57 | * value should not be used as a previously sampled value in later calls as it | ||
58 | * will not have the SEEN flag set. | ||
59 | */ | 56 | */ |
60 | errseq_t __errseq_set(errseq_t *eseq, int err) | 57 | errseq_t errseq_set(errseq_t *eseq, int err) |
61 | { | 58 | { |
62 | errseq_t cur, old; | 59 | errseq_t cur, old; |
63 | 60 | ||
@@ -107,7 +104,7 @@ errseq_t __errseq_set(errseq_t *eseq, int err) | |||
107 | } | 104 | } |
108 | return cur; | 105 | return cur; |
109 | } | 106 | } |
110 | EXPORT_SYMBOL(__errseq_set); | 107 | EXPORT_SYMBOL(errseq_set); |
111 | 108 | ||
112 | /** | 109 | /** |
113 | * errseq_sample - grab current errseq_t value | 110 | * errseq_sample - grab current errseq_t value |