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ext4: fix remount with 'abort' option

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After commit 6e47a3cc68 ("ext4: get rid of super block and sbi from
handle_mount_ops()") the 'abort' options stopped working. This is
because we're using ctx_set_mount_flags() helper that's expecting an
argument with the appropriate bit set, but instead got
EXT4_MF_FS_ABORTED which is a bit position. ext4_set_mount_flag() is
using set_bit() while ctx_set_mount_flags() was using bitwise OR.

Create a separate helper ctx_set_mount_flag() to handle setting the
mount_flags correctly.

While we're at it clean up the EXT4_SET_CTX macros so that we're only
creating helpers that we actually use to avoid warnings.

Fixes: 6e47a3cc68 ("ext4: get rid of super block and sbi from handle_mount_ops()")
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Cc: Ye Bin <yebin10@huawei.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Tested-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Link: https://lore.kernel.org/r/20220201131345.77591-1-lczerner@redhat.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Lukas Czerner 2022-02-01 14:13:45 +01:00 committed by Theodore Ts'o
parent cfb92440ee
commit e3952fcce1
1 changed files with 21 additions and 8 deletions
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29
fs/ext4/super.c
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@ -2045,8 +2045,8 @@ struct ext4_fs_context {
unsigned int mask_s_mount_opt;
unsigned int vals_s_mount_opt2;
unsigned int mask_s_mount_opt2;
unsigned int vals_s_mount_flags;
unsigned int mask_s_mount_flags;
unsigned long vals_s_mount_flags;
unsigned long mask_s_mount_flags;
unsigned int opt_flags; /* MOPT flags */
unsigned int spec;
u32 s_max_batch_time;
@ -2149,23 +2149,36 @@ static inline void ctx_set_##name(struct ext4_fs_context *ctx, \
{ \
ctx->mask_s_##name |= flag; \
ctx->vals_s_##name |= flag; \
} \
}
#define EXT4_CLEAR_CTX(name) \
static inline void ctx_clear_##name(struct ext4_fs_context *ctx, \
unsigned long flag) \
{ \
ctx->mask_s_##name |= flag; \
ctx->vals_s_##name &= ~flag; \
} \
}
#define EXT4_TEST_CTX(name) \
static inline unsigned long \
ctx_test_##name(struct ext4_fs_context *ctx, unsigned long flag) \
{ \
return (ctx->vals_s_##name & flag); \
} \
}
EXT4_SET_CTX(flags);
EXT4_SET_CTX(flags); /* set only */
EXT4_SET_CTX(mount_opt);
EXT4_CLEAR_CTX(mount_opt);
EXT4_TEST_CTX(mount_opt);
EXT4_SET_CTX(mount_opt2);
EXT4_SET_CTX(mount_flags);
EXT4_CLEAR_CTX(mount_opt2);
EXT4_TEST_CTX(mount_opt2);
static inline void ctx_set_mount_flag(struct ext4_fs_context *ctx, int bit)
{
set_bit(bit, &ctx->mask_s_mount_flags);
set_bit(bit, &ctx->vals_s_mount_flags);
}
static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
{
@ -2235,7 +2248,7 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
param->key);
return 0;
case Opt_abort:
ctx_set_mount_flags(ctx, EXT4_MF_FS_ABORTED);
ctx_set_mount_flag(ctx, EXT4_MF_FS_ABORTED);
return 0;
case Opt_i_version:
ext4_msg(NULL, KERN_WARNING, deprecated_msg, param->key, "5.20");