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authorJan Kara <jack@suse.cz>2019-11-05 17:44:12 +0100
committerTheodore Ts'o <tytso@mit.edu>2019-11-05 16:00:31 -0500
commit65db869c754e7c271691dd5feabf884347e694f5 (patch)
treeb4d1c3c7b3339e7d4e2632c5204e6978ffb685dc /fs/ext4
parent9b88f9fb0d2fc8f7e71e75a42c5a064bc6cfffd2 (diff)
downloadlinux-65db869c754e7c271691dd5feabf884347e694f5.tar.bz2
ext4: Fix credit estimate for final inode freeing
Estimate for the number of credits needed for final freeing of inode in ext4_evict_inode() was to small. We may modify 4 blocks (inode & sb for orphan deletion, bitmap & group descriptor for inode freeing) and not just 3. [ Fixed minor whitespace nit. -- TYT ] Fixes: e50e5129f384 ("ext4: xattr-in-inode support") CC: stable@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20191105164437.32602-6-jack@suse.cz Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/inode.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 516faa280ced..22ccab6c485e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -196,7 +196,12 @@ void ext4_evict_inode(struct inode *inode)
{
handle_t *handle;
int err;
- int extra_credits = 3;
+ /*
+ * Credits for final inode cleanup and freeing:
+ * sb + inode (ext4_orphan_del()), block bitmap, group descriptor
+ * (xattr block freeing), bitmap, group descriptor (inode freeing)
+ */
+ int extra_credits = 6;
struct ext4_xattr_inode_array *ea_inode_array = NULL;
trace_ext4_evict_inode(inode);
@@ -252,8 +257,12 @@ void ext4_evict_inode(struct inode *inode)
if (!IS_NOQUOTA(inode))
extra_credits += EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb);
+ /*
+ * Block bitmap, group descriptor, and inode are accounted in both
+ * ext4_blocks_for_truncate() and extra_credits. So subtract 3.
+ */
handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE,
- ext4_blocks_for_truncate(inode)+extra_credits);
+ ext4_blocks_for_truncate(inode) + extra_credits - 3);
if (IS_ERR(handle)) {
ext4_std_error(inode->i_sb, PTR_ERR(handle));
/*