[PATCHv5,2/5] ext4: mballoc: Refactor ext4_mb_discard_preallocations()
diff mbox series

Message ID 1cfae0098d2aa9afbeb59331401258182868c8f2.1589955723.git.riteshh@linux.ibm.com
State New
Headers show
Series
  • Improve ext4 handling of ENOSPC with multi-threaded use-case
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Commit Message

Ritesh Harjani May 20, 2020, 6:40 a.m. UTC
Implement ext4_mb_discard_preallocations_should_retry()
which we will need in later patches to add more logic
like check for sequence number match to see if we should
retry for block allocation or not.

There should be no functionality change in this patch.

Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
---
 fs/ext4/mballoc.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

Patch
diff mbox series

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index decc5168d126..b75408d72773 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4543,6 +4543,17 @@  static int ext4_mb_discard_preallocations(struct super_block *sb, int needed)
 	return freed;
 }
 
+static bool ext4_mb_discard_preallocations_should_retry(struct super_block *sb,
+			struct ext4_allocation_context *ac)
+{
+	int freed;
+
+	freed = ext4_mb_discard_preallocations(sb, ac->ac_o_ex.fe_len);
+	if (freed)
+		return true;
+	return false;
+}
+
 /*
  * Main entry point into mballoc to allocate blocks
  * it tries to use preallocation first, then falls back
@@ -4551,7 +4562,6 @@  static int ext4_mb_discard_preallocations(struct super_block *sb, int needed)
 ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 				struct ext4_allocation_request *ar, int *errp)
 {
-	int freed;
 	struct ext4_allocation_context *ac = NULL;
 	struct ext4_sb_info *sbi;
 	struct super_block *sb;
@@ -4656,8 +4666,7 @@  ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
 			ar->len = ac->ac_b_ex.fe_len;
 		}
 	} else {
-		freed  = ext4_mb_discard_preallocations(sb, ac->ac_o_ex.fe_len);
-		if (freed)
+		if (ext4_mb_discard_preallocations_should_retry(sb, ac))
 			goto repeat;
 		/*
 		 * If block allocation fails then the pa allocated above