diff options
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4a0ba009c88e..8bdf2029ebc7 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5179,7 +5179,7 @@ error: return -EFSCORRUPTED; } -bool ext4_should_enable_large_folio(struct inode *inode) +static bool ext4_should_enable_large_folio(struct inode *inode) { struct super_block *sb = inode->i_sb; @@ -5196,6 +5196,22 @@ bool ext4_should_enable_large_folio(struct inode *inode) return true; } +/* + * Limit the maximum folio order to 2048 blocks to prevent overestimation + * of reserve handle credits during the folio writeback in environments + * where the PAGE_SIZE exceeds 4KB. + */ +#define EXT4_MAX_PAGECACHE_ORDER(i) \ + umin(MAX_PAGECACHE_ORDER, (11 + (i)->i_blkbits - PAGE_SHIFT)) +void ext4_set_inode_mapping_order(struct inode *inode) +{ + if (!ext4_should_enable_large_folio(inode)) + return; + + mapping_set_folio_order_range(inode->i_mapping, 0, + EXT4_MAX_PAGECACHE_ORDER(inode)); +} + struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, ext4_iget_flags flags, const char *function, unsigned int line) @@ -5513,8 +5529,8 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, ret = -EFSCORRUPTED; goto bad_inode; } - if (ext4_should_enable_large_folio(inode)) - mapping_set_large_folios(inode->i_mapping); + + ext4_set_inode_mapping_order(inode); ret = check_igot_inode(inode, flags, function, line); /* |