[f2fs-dev] [PATCH] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()

[f2fs-dev] [PATCH] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()

[Chao Yu via Linux-f2fs-devel]

In f2fs_shrink_scan(), let's check if we have already shrinked enough
number of memory before calling f2fs_shrink_read_extent_tree().

Signed-off-by: Chao Yu <chao@kernel.org>
---
 fs/f2fs/shrinker.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index b88babcf6ab4..4f6bf5926de4 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -109,7 +109,8 @@ unsigned long f2fs_shrink_scan(struct shrinker *shrink,
 		freed += f2fs_shrink_age_extent_tree(sbi, nr >> 2);
 
 		/* shrink read extent cache entries */
-		freed += f2fs_shrink_read_extent_tree(sbi, nr >> 2);
+		if (freed < nr)
+			freed += f2fs_shrink_read_extent_tree(sbi, nr >> 2);
 
 		/* shrink clean nat cache entries */
 		if (freed < nr)
-- 
2.49.0



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[PATCH] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()

[Chao Yu]

In f2fs_shrink_scan(), let's check if we have already shrinked enough
number of memory before calling f2fs_shrink_read_extent_tree().

Signed-off-by: Chao Yu <chao@kernel.org>
---
 fs/f2fs/shrinker.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index b88babcf6ab4..4f6bf5926de4 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -109,7 +109,8 @@ unsigned long f2fs_shrink_scan(struct shrinker *shrink,
 		freed += f2fs_shrink_age_extent_tree(sbi, nr >> 2);
 
 		/* shrink read extent cache entries */
-		freed += f2fs_shrink_read_extent_tree(sbi, nr >> 2);
+		if (freed < nr)
+			freed += f2fs_shrink_read_extent_tree(sbi, nr >> 2);
 
 		/* shrink clean nat cache entries */
 		if (freed < nr)
-- 
2.49.0

Re: [f2fs-dev] [PATCH] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()

[patchwork-bot+f2fs--- via Linux-f2fs-devel]

Hello:

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

On Wed,  5 Aug 2026 12:20:50 +0000 you wrote:
> In f2fs_shrink_scan(), let's check if we have already shrinked enough
> number of memory before calling f2fs_shrink_read_extent_tree().
> 
> Signed-off-by: Chao Yu <chao@kernel.org>
> ---
>  fs/f2fs/shrinker.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Here is the summary with links:
  - [f2fs-dev] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()
    https://git.kernel.org/jaegeuk/f2fs/c/7173538c41d6

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




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Re: [f2fs-dev] [PATCH] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()

[patchwork-bot+f2fs]

Hello:

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

On Wed,  5 Aug 2026 12:20:50 +0000 you wrote:
> In f2fs_shrink_scan(), let's check if we have already shrinked enough
> number of memory before calling f2fs_shrink_read_extent_tree().
> 
> Signed-off-by: Chao Yu <chao@kernel.org>
> ---
>  fs/f2fs/shrinker.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Here is the summary with links:
  - [f2fs-dev] f2fs: avoid unnecessary shrink in f2fs_shrink_scan()
    https://git.kernel.org/jaegeuk/f2fs/c/7173538c41d6

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