lisa/android_kernel_xiaomi_sm8350
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f2fs: fix to unmap pages from userspace process in punch_hole()

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[ Upstream commit c8dc3047c48540183744f959412d44b08c5435e1 ]

We need to unmap pages from userspace process before removing pagecache
in punch_hole() like we did in f2fs_setattr().

Similar change:
commit 5e44f8c374 ("ext4: hole-punch use truncate_pagecache_range")

Fixes: fbfa2cc58d ("f2fs: add file operations")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chao Yu 2021-08-25 19:34:19 +08:00 committed by Greg Kroah-Hartman
parent 1c28c23dc8
commit debdff9600
1 changed files with 1 additions and 3 deletions
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4
fs/f2fs/file.c
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@ -981,7 +981,6 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
} }
if (pg_start < pg_end) { if (pg_start < pg_end) {
struct address_space *mapping = inode->i_mapping;
loff_t blk_start, blk_end; loff_t blk_start, blk_end;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
@ -993,8 +992,7 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
down_write(&F2FS_I(inode)->i_mmap_sem); down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_inode_pages_range(mapping, blk_start, truncate_pagecache_range(inode, blk_start, blk_end - 1);
blk_end - 1);
f2fs_lock_op(sbi); f2fs_lock_op(sbi);
ret = f2fs_truncate_hole(inode, pg_start, pg_end); ret = f2fs_truncate_hole(inode, pg_start, pg_end);