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320f0c6022
The purpose of this PR is to accepts fadvise ioctl from userland to do read-ahead by demand. It could dramatically improve sequential read performance especially when primarycache is set to metadata or zfs_prefetch_disable is 1. If the file is mmaped, generic_fadvise is also called for page cache read-ahead besides dmu_prefetch. Only POSIX_FADV_WILLNEED and POSIX_FADV_SEQUENTIAL are supported in this PR currently. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Finix Yan <yancw@info2soft.com> Closes #13694 |
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| .. | ||
| file_append.c | ||
| file_check.c | ||
| file_common.h | ||
| file_fadvise.c | ||
| file_trunc.c | ||
| file_write.c | ||
| largest_file.c | ||
| randfree_file.c | ||
| randwritecomp.c | ||