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clarify when read_ahead may be set

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This commit is contained in:
Alasdair Kergon 2007-12-05 16:28:19 +00:00
parent 9a22e746b5
commit a8524c3942
1 changed files with 3 additions and 0 deletions
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3
libdm/libdevmapper.h
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@ -165,6 +165,9 @@ int dm_task_suppress_identical_reload(struct dm_task *dmt);
#define DM_READ_AHEAD_MINIMUM_FLAG 0x1 /* Value supplied is minimum */ #define DM_READ_AHEAD_MINIMUM_FLAG 0x1 /* Value supplied is minimum */
/*
* Read ahead is set with DM_DEVICE_CREATE with a table or DM_DEVICE_RESUME.
*/
int dm_task_set_read_ahead(struct dm_task *dmt, uint32_t read_ahead, int dm_task_set_read_ahead(struct dm_task *dmt, uint32_t read_ahead,
uint32_t read_ahead_flags); uint32_t read_ahead_flags);
uint32_t dm_task_get_read_ahead(const struct dm_task *dmt, uint32_t dm_task_get_read_ahead(const struct dm_task *dmt,