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fat: release buffer head after rebuilding parent

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fat_scan_logstart() leaves the matching directory entry's buffer head in
sinfo.bh for the caller to release, just like fat_scan().

fat_rebuild_parent() uses the directory entry to rebuild the parent inode
for the nostale_ro NFS export path, but does not release sinfo.bh after a
successful scan.  Release it once fat_build_inode() has consumed the
directory entry data.

Link: https://lore.kernel.org/20260715020957.1096309-1-chenyichong@uniontech.com
Fixes: f1e6fb0ab4 ("fat (exportfs): rebuild directory-inode if fat_dget()")
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Amit Sahrawat <a.sahrawat@samsung.com>
Cc: chenyichong <chenyichong@uniontech.com>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Ravishankar N <ravi.n1@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Yichong Chen
2026-07-15 10:09:57 +08:00
committed by Andrew Morton
parent 10dab13117
commit 83e98dbf19
1 changed files with 3 additions and 1 deletions
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4
fs/fat/nfs.c
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@@ -250,8 +250,10 @@ struct inode *fat_rebuild_parent(struct super_block *sb, int parent_logstart)
MSDOS_I(dummy_grand_parent)->i_pos = -1;
}
if (!fat_scan_logstart(dummy_grand_parent, clus_to_match, &sinfo))
if (!fat_scan_logstart(dummy_grand_parent, clus_to_match, &sinfo)) {
parent = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
brelse(sinfo.bh);
}
brelse(parent_bh);
iput(dummy_grand_parent);