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author | David Teigland <teigland@redhat.com> | 2017-08-16 13:50:51 -0500 |
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committer | David Teigland <teigland@redhat.com> | 2017-10-18 14:09:12 -0500 |
commit | 8003f7d51d124a9dbfac53ce529be4f7c1749ebf (patch) | |
tree | 6719fbdfa4142b19485ccd35222fc95bcc9fc2eb | |
parent | 2989789433140ba5fe75b1f4d93c3e602289f3dd (diff) | |
download | lvm2-8003f7d51d124a9dbfac53ce529be4f7c1749ebf.tar.gz |
conditional compile with AIO_SUPPORT
-rw-r--r-- | lib/device/dev-io.c | 34 | ||||
-rw-r--r-- | tools/lvmcmdline.c | 6 |
2 files changed, 40 insertions, 0 deletions
diff --git a/lib/device/dev-io.c b/lib/device/dev-io.c index 25f241904..c8743f348 100644 --- a/lib/device/dev-io.c +++ b/lib/device/dev-io.c @@ -828,6 +828,8 @@ int dev_set(struct device *dev, uint64_t offset, size_t len, int value) return (len == 0); } +#ifdef AIO_SUPPORT + /* io_setup() wrapper */ struct dev_async_context *dev_async_context_setup(unsigned async_event_count) @@ -961,3 +963,35 @@ int dev_async_getevents(struct dev_async_context *ac, int wait_count, struct tim return 1; } +#else /* AIO_SUPPORT */ + +struct dev_async_context *dev_async_context_setup(unsigned async_event_count) +{ + return NULL; +} + +struct dev_async_io *dev_async_io_alloc(int buf_len) +{ + return NULL; +} + +void dev_async_context_destroy(struct dev_async_context *ac) +{ +} + +void dev_async_io_destroy(struct dev_async_io *aio) +{ +} + +int dev_async_read_submit(struct dev_async_context *ac, struct dev_async_io *aio, + struct device *dev, uint32_t len, uint64_t offset, int *nospace) +{ + return 0; +} + +int dev_async_getevents(struct dev_async_context *ac, int wait_count, struct timespec *timeout) +{ + return 0; +} + +#endif /* AIO_SUPPORT */ diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c index de22af414..a2e329dac 100644 --- a/tools/lvmcmdline.c +++ b/tools/lvmcmdline.c @@ -2386,7 +2386,13 @@ static int _get_current_settings(struct cmd_context *cmd) !_merge_synonym(cmd, metadatacopies_ARG, vgmetadatacopies_ARG))) return EINVALID_CMD_LINE; +#ifdef AIO_SUPPORT cmd->use_aio = find_config_tree_bool(cmd, metadata_scan_async_CFG, NULL); +#else + cmd->use_aio = 0; + if (find_config_tree_bool(cmd, metadata_scan_async_CFG, NULL)) + log_verbose("No async I/O support, ignoring metadata/scan_async."); +#endif /* Zero indicates success */ return 0; |