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fs_inode:Change the type of i_crefs to atomic_int

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Summary:
  1.Modified the i_crefs from int16_t to atomic_int
  2.Modified the i_crefs add, delete, read, and initialize interfaces to atomic operations
The purpose of this change is to avoid deadlock in cross-core scenarios, where A Core blocks B Core’s request for a write operation to A Core when A Core requests a read operation to B Core.

Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
This commit is contained in:
chenrun1
2024-07-23 19:30:19 +08:00
committed by Xiang Xiao
parent 56bcc3bb12
commit 4cec713dbf
26 changed files with 47 additions and 134 deletions
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fs/mount/fs_umount2.c
+1 -2
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@@ -145,8 +145,7 @@ int nx_umount2(FAR const char *target, unsigned int flags)
{
/* Just decrement the reference count (without deleting it) */
DEBUGASSERT(mountpt_inode->i_crefs > 0);
mountpt_inode->i_crefs--;
atomic_fetch_sub(&mountpt_inode->i_crefs, 1);
inode_unlock();
}
else