This patch tries to preload extent_cache given POSIX_FADV_WILLNEED, which is
more useful for generic usecases.
Reviewed-by: Chao Yu <c...@kernel.org>
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
Change log from v1:
- load it at offset=0 once to avoid reloading for all the calls
fs/f2fs/file.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 09716127e107..161826c6e200 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4858,6 +4858,9 @@ static int f2fs_file_fadvise(struct file *filp, loff_t
offset, loff_t len,
filp->f_mode &= ~FMODE_RANDOM;
spin_unlock(&filp->f_lock);
return 0;
+ } else if (advice == POSIX_FADV_WILLNEED && offset == 0) {
+ /* Load extent cache at the first readahead. */
+ f2fs_precache_extents(inode);
}
err = generic_fadvise(filp, offset, len, advice);
--
2.42.0.515.g380fc7ccd1-goog
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