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authorRitesh Harjani <riteshh@linux.ibm.com>2020-05-20 12:10:33 +0530
committerTheodore Ts'o <tytso@mit.edu>2020-06-03 23:16:53 -0400
commitcf5e2ca6c99077d128e971149f0c262e808ca831 (patch)
tree2660554c1010d3fb9af7bbd6bc66bcfe8e86f397 /fs/ext4
parent53f86b170dfa8d50b8b3fb1c5cf17c33b2327db2 (diff)
downloadlinux-cf5e2ca6c99077d128e971149f0c262e808ca831.tar.bz2
ext4: mballoc: refactor ext4_mb_discard_preallocations()
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> Link: https://lore.kernel.org/r/1cfae0098d2aa9afbeb59331401258182868c8f2.1589955723.git.riteshh@linux.ibm.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/mballoc.c15
1 files changed, 12 insertions, 3 deletions
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 @@ repeat:
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