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f2fs: preload extent_cache for POSIX_FADV_WILLNEED
This patch tries to preload extent_cache given POSIX_FADV_WILLNEED, which is more useful for generic usecases. Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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@ -4858,6 +4858,9 @@ static int f2fs_file_fadvise(struct file *filp, loff_t offset, loff_t len,
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filp->f_mode &= ~FMODE_RANDOM;
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spin_unlock(&filp->f_lock);
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return 0;
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} else if (advice == POSIX_FADV_WILLNEED && offset == 0) {
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/* Load extent cache at the first readahead. */
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f2fs_precache_extents(inode);
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}
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err = generic_fadvise(filp, offset, len, advice);
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