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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 14:11:03 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 14:11:03 -0700 |
commit | ec3604c7a5aae8953545b0d05495357009a960e5 (patch) | |
tree | dd3927047b90048231d924fc151a9d1881f7b8cd /lib/errseq.c | |
parent | 066dea8c30ae7d8e061145bcf5422ce0773582eb (diff) | |
parent | 6d4b51241394664fffbf68ea86c96d2699344583 (diff) | |
download | linux-ec3604c7a5aae8953545b0d05495357009a960e5.tar.bz2 |
Merge tag 'wberr-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull writeback error handling updates from Jeff Layton:
"This pile continues the work from last cycle on better tracking
writeback errors. In v4.13 we added some basic errseq_t infrastructure
and converted a few filesystems to use it.
This set continues refining that infrastructure, adds documentation,
and converts most of the other filesystems to use it. The main
exception at this point is the NFS client"
* tag 'wberr-v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
ecryptfs: convert to file_write_and_wait in ->fsync
mm: remove optimizations based on i_size in mapping writeback waits
fs: convert a pile of fsync routines to errseq_t based reporting
gfs2: convert to errseq_t based writeback error reporting for fsync
fs: convert sync_file_range to use errseq_t based error-tracking
mm: add file_fdatawait_range and file_write_and_wait
fuse: convert to errseq_t based error tracking for fsync
mm: consolidate dax / non-dax checks for writeback
Documentation: add some docs for errseq_t
errseq: rename __errseq_set to errseq_set
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 @@ #define ERRSEQ_CTR_INC (1 << (ERRSEQ_SHIFT + 1)) /** - * __errseq_set - set a errseq_t for later reporting + * errseq_set - set a errseq_t for later reporting * @eseq: errseq_t field that should be set - * @err: error to set + * @err: error to set (must be between -1 and -MAX_ERRNO) * * This function sets the error in *eseq, and increments the sequence counter * if the last sequence was sampled at some point in the past. * * Any error set will always overwrite an existing error. * - * Most callers will want to use the errseq_set inline wrapper to efficiently - * handle the common case where err is 0. - * - * We do return an errseq_t here, primarily for debugging purposes. The return - * value should not be used as a previously sampled value in later calls as it - * will not have the SEEN flag set. + * We do return the latest value here, primarily for debugging purposes. The + * return value should not be used as a previously sampled value in later calls + * as it will not have the SEEN flag set. */ -errseq_t __errseq_set(errseq_t *eseq, int err) +errseq_t errseq_set(errseq_t *eseq, int err) { errseq_t cur, old; @@ -107,7 +104,7 @@ errseq_t __errseq_set(errseq_t *eseq, int err) } return cur; } -EXPORT_SYMBOL(__errseq_set); +EXPORT_SYMBOL(errseq_set); /** * errseq_sample - grab current errseq_t value |