Re: [PATCH 0/6] Extended file stat system call
David Howells <[email protected]>
| Newsgroups | gmane.comp.lib.glibc.alpha,gmane.linux.file-systems,gmane.linux.nfs,gmane.linux.kernel.cifs,gmane.network.samba.internals,gmane.comp.file-systems.ext4,gmane.comp.emulators.wine.devel,gmane.comp.kde.devel.kfm,gmane.comp.gnome.nautilus,gmane.linux.kernel.api |
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Dave Chinner <[email protected]> wrote: > st_blksize - file block size > st_alloc_blksize - allocation block size/alignment > st_small_io_size - IO size/alignment that avoids > filesystem/page cache RMW > st_preferred_io_size - preferred IO size for general > usage. > st_large_io_size - IO size/alignment for high > bandwidth sequential IO What is st_blksize here? Is it directly comparable (if such a thing is possible) to st_blksize in struct stat? Or does st_preferred_io_size map to the current st_blksize and your st_blksize map to actual media block size (and if so, is that the same as st_alloc_blksize? - I presume st_alloc_blksize must be a multiple of the media block size). David