[f2fs-dev] [PATCH] f2fs: preload extent_cache for POSIX_FADV_WILLNEED

[f2fs-dev] [PATCH] f2fs: preload extent_cache for POSIX_FADV_WILLNEED

[Jaegeuk Kim]

This patch tries to preload extent_cache given POSIX_FADV_WILLNEED, which is
more useful for generic usecases.

Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 09716127e107..df7703c1f7d7 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4858,6 +4858,8 @@ 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) {
+		f2fs_precache_extents(inode);
 	}
 
 	err = generic_fadvise(filp, offset, len, advice);
-- 
2.42.0.459.ge4e396fd5e-goog



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

Re: [f2fs-dev] [PATCH] f2fs: preload extent_cache for POSIX_FADV_WILLNEED

[Chao Yu]

On 2023/9/20 8:46, Jaegeuk Kim wrote:
> This patch tries to preload extent_cache given POSIX_FADV_WILLNEED, which is
> more useful for generic usecases.
> 
> Suggested-by: Eric Biggers <ebiggers@kernel.org>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

Re: [f2fs-dev] [PATCH] f2fs: preload extent_cache for POSIX_FADV_WILLNEED

[patchwork-bot+f2fs]

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Tue, 19 Sep 2023 17:46:45 -0700 you wrote:
> This patch tries to preload extent_cache given POSIX_FADV_WILLNEED, which is
> more useful for generic usecases.
> 
> Suggested-by: Eric Biggers <ebiggers@kernel.org>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/file.c | 2 ++
>  1 file changed, 2 insertions(+)

Here is the summary with links:
  - [f2fs-dev] f2fs: preload extent_cache for POSIX_FADV_WILLNEED
    https://git.kernel.org/jaegeuk/f2fs/c/a3edf9f0bbb7

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html




_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

Re: [f2fs-dev] [PATCH v2] f2fs: preload extent_cache for POSIX_FADV_WILLNEED

[Jaegeuk Kim]

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>
---

 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


_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel