From: Tien Fong Chee <tien.fong.c...@intel.com>
Release cluster block immediately when no longer use would help to reduce
64KiB memory allocated to the memory pool.
Signed-off-by: Tien Fong Chee <tien.fong.c...@intel.com>
---
changes for v2
- Assigned NULL to itr after free.
- Added NULL checking to itr, avoid freeing twice.
---
fs/fat/fat.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 347787e..fa846ff 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -1152,12 +1152,21 @@ int file_fat_read_at(const char *filename, loff_t pos,
void *buffer,
goto out_free_both;
debug("reading %s at pos %llu\n", filename, pos);
- ret = get_contents(&fsdata, itr->dent, pos, buffer, maxsize, actread);
+
+ /* For saving default max clustersize memory allocated to malloc pool */
+ dir_entry *dentptr = itr->dent;
+
+ free(itr);
+
+ itr = NULL;
+
+ ret = get_contents(&fsdata, dentptr, pos, buffer, maxsize, actread);
out_free_both:
free(fsdata.fatbuf);
out_free_itr:
- free(itr);
+ if (itr)
+ free(itr);
return ret;
}
--
2.2.0
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